31253289292920 has 128 divisors (see below), whose sum is σ = 95737965733440. Its totient is φ = 8159067770880.

The previous prime is 31253289292903. The next prime is 31253289292921. The reversal of 31253289292920 is 2929298235213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31253289292921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2469891 + ... + 8282930.

Almost surely, 2^{31253289292920} is an apocalyptic number.

31253289292920 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

31253289292920 is an abundant number, since it is smaller than the sum of its proper divisors (64484676440520).

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

31253289292920 is a wasteful number, since it uses less digits than its factorization.

31253289292920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10753345 (or 10753341 counting only the distinct ones).

The product of its (nonzero) digits is 8398080, while the sum is 57.

The spelling of 31253289292920 in words is "thirty-one trillion, two hundred fifty-three billion, two hundred eighty-nine million, two hundred ninety-two thousand, nine hundred twenty".