100031012331 has 16 divisors (see below), whose sum is σ = 134969702400. Its totient is φ = 65892718080.

The previous prime is 100031012311. The next prime is 100031012339. The reversal of 100031012331 is 133210130001.

It is not a de Polignac number, because 100031012331 - 2²² = 100026818027 is a prime.

It is a super-2 number, since 2×100031012331² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 100031012331.

It is not an unprimeable number, because it can be changed into a prime (100031012339) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 221755 + ... + 499236.

It is an arithmetic number, because the mean of its divisors is an integer number (8435606400).

Almost surely, 2^100031012331 is an apocalyptic number.

100031012331 is a deficient number, since it is larger than the sum of its proper divisors (34938690069).

100031012331 is a wasteful number, since it uses less digits than its factorization.

100031012331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 721546.

The product of its (nonzero) digits is 54, while the sum is 15.

Adding to 100031012331 its reverse (133210130001), we get a palindrome (233241142332).

The spelling of 100031012331 in words is "one hundred billion, thirty-one million, twelve thousand, three hundred thirty-one".