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31226424100 = 22524124312
BaseRepresentation
bin11101000101001111…
…010110101100100100
32222121020000200221221
4131011033112230210
51002422431032400
622202322350124
72153551140214
oct350517265444
988536020857
1031226424100
1112274558673
1260757bb344
132c384aba31
141723296244
15c2b633c1a
hex7453d6b24

31226424100 has 81 divisors (see below), whose sum is σ = 69615886963. Its totient is φ = 12157648000.

The previous prime is 31226424083. The next prime is 31226424101. The reversal of 31226424100 is 142462213.

It is a happy number.

The square root of 31226424100 is 176710.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 13143705316 + 18082718784 = 114646^2 + 134472^2 .

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31226424101) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 72450885 + ... + 72451315.

Almost surely, 231226424100 is an apocalyptic number.

31226424100 is the 176710-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31226424100

31226424100 is an abundant number, since it is smaller than the sum of its proper divisors (38389462863).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31226424100 is an equidigital number, since it uses as much as digits as its factorization.

31226424100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 958 (or 479 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 25.

Multiplying 31226424100 by its sum of digits (25), we get a square (780660602500 = 8835502).

31226424100 divided by its sum of digits (25) gives a square (1249056964 = 353422).

Multiplying 31226424100 by its product of nonzero digits (2304), we get a square (71945681126400 = 84820802).

Adding to 31226424100 its reverse (142462213), we get a palindrome (31368886313).

The spelling of 31226424100 in words is "thirty-one billion, two hundred twenty-six million, four hundred twenty-four thousand, one hundred".

Divisors: 1 2 4 5 10 20 25 41 50 82 100 164 205 410 431 820 862 1025 1681 1724 2050 2155 3362 4100 4310 6724 8405 8620 10775 16810 17671 21550 33620 35342 42025 43100 70684 84050 88355 168100 176710 185761 353420 371522 441775 724511 743044 883550 928805 1449022 1767100 1857610 2898044 3622555 3715220 4644025 7245110 7616201 9288050 14490220 15232402 18112775 18576100 30464804 36225550 38081005 72451100 76162010 152324020 190405025 312264241 380810050 624528482 761620100 1249056964 1561321205 3122642410 6245284820 7806606025 15613212050 31226424100