31274704978 has 16 divisors (see below), whose sum is σ = 51189446880. Its totient is φ = 14212259200.

The previous prime is 31274704943. The next prime is 31274704997. The reversal of 31274704978 is 87940747213.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 83743 + ... + 263746.

It is an arithmetic number, because the mean of its divisors is an integer number (3199340430).

Almost surely, 2^31274704978 is an apocalyptic number.

31274704978 is a deficient number, since it is larger than the sum of its proper divisors (19914741902).

31274704978 is a wasteful number, since it uses less digits than its factorization.

31274704978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 351593.

The product of its (nonzero) digits is 2370816, while the sum is 52.

The spelling of 31274704978 in words is "thirty-one billion, two hundred seventy-four million, seven hundred four thousand, nine hundred seventy-eight".