31100008923 has 72 divisors (see below), whose sum is σ = 48587862960. Its totient is φ = 19154488320.

The previous prime is 31100008873. The next prime is 31100008939. The reversal of 31100008923 is 32980000113.

It is not a de Polignac number, because 31100008923 - 2⁶ = 31100008859 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31100008943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 20885763 + ... + 20887251.

It is an arithmetic number, because the mean of its divisors is an integer number (674831430).

Almost surely, 2^31100008923 is an apocalyptic number.

31100008923 is a deficient number, since it is larger than the sum of its proper divisors (17487854037).

31100008923 is a wasteful number, since it uses less digits than its factorization.

31100008923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1689 (or 1663 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The spelling of 31100008923 in words is "thirty-one billion, one hundred million, eight thousand, nine hundred twenty-three".