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10212303031 = 71458900433
BaseRepresentation
bin10011000001011001…
…10110000010110111
3222100201020202010121
421200230312002313
5131403322144111
64405205032411
7511033100140
oct114054660267
928321222117
1010212303031
114370640467
121b900b5707
13c69991678
146cc428ac7
153eb847871
hex260b360b7

10212303031 has 4 divisors (see below), whose sum is σ = 11671203472. Its totient is φ = 8753402592.

The previous prime is 10212303007. The next prime is 10212303043. The reversal of 10212303031 is 13030321201.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 10212303031 - 211 = 10212300983 is a prime.

It is a super-2 number, since 2×102123030312 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10212302996 and 10212303014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10212303931) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 729450210 + ... + 729450223.

It is an arithmetic number, because the mean of its divisors is an integer number (2917800868).

Almost surely, 210212303031 is an apocalyptic number.

10212303031 is a deficient number, since it is larger than the sum of its proper divisors (1458900441).

10212303031 is an equidigital number, since it uses as much as digits as its factorization.

10212303031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1458900440.

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 10212303031 its reverse (13030321201), we get a palindrome (23242624232).

The spelling of 10212303031 in words is "ten billion, two hundred twelve million, three hundred three thousand, thirty-one".

Divisors: 1 7 1458900433 10212303031