31960305923 has 32 divisors (see below), whose sum is σ = 40202459136. Its totient is φ = 24730915968.

The previous prime is 31960305893. The next prime is 31960305989. The reversal of 31960305923 is 32950306913.

It is a cyclic number.

It is not a de Polignac number, because 31960305923 - 2⁸ = 31960305667 is a prime.

It is a super-2 number, since 2×31960305923² (a number of 22 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (31960335923) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9976640 + ... + 9979842.

It is an arithmetic number, because the mean of its divisors is an integer number (1256326848).

Almost surely, 2^31960305923 is an apocalyptic number.

31960305923 is a deficient number, since it is larger than the sum of its proper divisors (8242153213).

31960305923 is a wasteful number, since it uses less digits than its factorization.

31960305923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5603.

The product of its (nonzero) digits is 131220, while the sum is 41.

The spelling of 31960305923 in words is "thirty-one billion, nine hundred sixty million, three hundred five thousand, nine hundred twenty-three".