31056883440 has 160 divisors (see below), whose sum is σ = 109595414016. Its totient is φ = 7201582080.

The previous prime is 31056883439. The next prime is 31056883469. The reversal of 31056883440 is 4438865013.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 31056883392 and 31056883401.

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 31 ways as a sum of consecutive naturals, for example, 195019 + ... + 316458.

Almost surely, 2^31056883440 is an apocalyptic number.

31056883440 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

31056883440 is an abundant number, since it is smaller than the sum of its proper divisors (78538530576).

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

31056883440 is a wasteful number, since it uses less digits than its factorization.

31056883440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 511527 (or 511521 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 42.

The spelling of 31056883440 in words is "thirty-one billion, fifty-six million, eight hundred eighty-three thousand, four hundred forty".