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31100423300 = 22521739317881
BaseRepresentation
bin11100111101101110…
…101100110010000100
32222021102221012100122
4130331232230302010
51002143202021200
622142022001112
72150461144022
oct347556546204
988242835318
1031100423300
111220a418381
12603b576198
132c1836364b
141710657712
15c20545385
hex73dbacc84

31100423300 has 36 divisors (see below), whose sum is σ = 67495573236. Its totient is φ = 12438758400.

The previous prime is 31100423279. The next prime is 31100423311. The reversal of 31100423300 is 332400113.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 3761123584 + 27339299716 = 61328^2 + 165346^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1730360 + ... + 1748240.

Almost surely, 231100423300 is an apocalyptic number.

It is an amenable number.

31100423300 is an abundant number, since it is smaller than the sum of its proper divisors (36395149936).

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

31100423300 is a wasteful number, since it uses less digits than its factorization.

31100423300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35288 (or 35281 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 31100423300 its reverse (332400113), we get a palindrome (31432823413).

The spelling of 31100423300 in words is "thirty-one billion, one hundred million, four hundred twenty-three thousand, three hundred".

Divisors: 1 2 4 5 10 20 25 50 100 17393 17881 34786 35762 69572 71524 86965 89405 173930 178810 347860 357620 434825 447025 869650 894050 1739300 1788100 311004233 622008466 1244016932 1555021165 3110042330 6220084660 7775105825 15550211650 31100423300