31357553948 has 24 divisors (see below), whose sum is σ = 62769659904. Its totient is φ = 13427262000.

The previous prime is 31357553939. The next prime is 31357553959. The reversal of 31357553948 is 84935575313.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 31357553948.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 454268 + ... + 518723.

It is an arithmetic number, because the mean of its divisors is an integer number (2615402496).

Almost surely, 2^31357553948 is an apocalyptic number.

It is an amenable number.

31357553948 is an abundant number, since it is smaller than the sum of its proper divisors (31412105956).

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

31357553948 is a wasteful number, since it uses less digits than its factorization.

31357553948 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 974153 (or 974151 counting only the distinct ones).

The product of its digits is 6804000, while the sum is 53.

The spelling of 31357553948 in words is "thirty-one billion, three hundred fifty-seven million, five hundred fifty-three thousand, nine hundred forty-eight".