31047868854 has 24 divisors (see below), whose sum is σ = 68911125192. Its totient is φ = 10096867680.

The previous prime is 31047868837. The next prime is 31047868861. The reversal of 31047868854 is 45886874013.

31047868854 is a `hidden beast` number, since 31 + 0 + 478 + 68 + 85 + 4 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 31047868854.

It is a congruent number.

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 11 ways as a sum of consecutive naturals, for example, 21034404 + ... + 21035879.

It is an arithmetic number, because the mean of its divisors is an integer number (2871296883).

Almost surely, 2^31047868854 is an apocalyptic number.

31047868854 is an abundant number, since it is smaller than the sum of its proper divisors (37863256338).

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

31047868854 is a wasteful number, since it uses less digits than its factorization.

31047868854 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42070332 (or 42070329 counting only the distinct ones).

The product of its (nonzero) digits is 5160960, while the sum is 54.

The spelling of 31047868854 in words is "thirty-one billion, forty-seven million, eight hundred sixty-eight thousand, eight hundred fifty-four".