31045917738 has 32 divisors (see below), whose sum is σ = 67856942592. Its totient is φ = 9391132400.

The previous prime is 31045917719. The next prime is 31045917751. The reversal of 31045917738 is 83771954013.

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 15 ways as a sum of consecutive naturals, for example, 380598 + ... + 454913.

It is an arithmetic number, because the mean of its divisors is an integer number (2120529456).

Almost surely, 2^31045917738 is an apocalyptic number.

31045917738 is an abundant number, since it is smaller than the sum of its proper divisors (36811024854).

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

31045917738 is a wasteful number, since it uses less digits than its factorization.

31045917738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 836090.

The product of its (nonzero) digits is 635040, while the sum is 48.

The spelling of 31045917738 in words is "thirty-one billion, forty-five million, nine hundred seventeen thousand, seven hundred thirty-eight".