31253770464 has 96 divisors (see below), whose sum is σ = 96785934336. Its totient is φ = 8641589760.

The previous prime is 31253770459. The next prime is 31253770481. The reversal of 31253770464 is 46407735213.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 729307 + ... + 770970.

It is an arithmetic number, because the mean of its divisors is an integer number (1008186816).

Almost surely, 2^31253770464 is an apocalyptic number.

It is an amenable number.

31253770464 is an abundant number, since it is smaller than the sum of its proper divisors (65532163872).

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

31253770464 is a wasteful number, since it uses less digits than its factorization.

31253770464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1500328 (or 1500320 counting only the distinct ones).

The product of its (nonzero) digits is 423360, while the sum is 42.

The spelling of 31253770464 in words is "thirty-one billion, two hundred fifty-three million, seven hundred seventy thousand, four hundred sixty-four".