31325728352 has 24 divisors (see below), whose sum is σ = 61680807216. Its totient is φ = 15660761472.

The previous prime is 31325728349. The next prime is 31325728363. The reversal of 31325728352 is 25382752313.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 191918 + ... + 315410.

It is an arithmetic number, because the mean of its divisors is an integer number (2570033634).

Almost surely, 2^31325728352 is an apocalyptic number.

31325728352 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

31325728352 is a deficient number, since it is larger than the sum of its proper divisors (30355078864).

31325728352 is a wasteful number, since it uses less digits than its factorization.

31325728352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131430 (or 131422 counting only the distinct ones).

The product of its digits is 302400, while the sum is 41.

The spelling of 31325728352 in words is "thirty-one billion, three hundred twenty-five million, seven hundred twenty-eight thousand, three hundred fifty-two".