31731428860000 has 60 divisors (see below), whose sum is σ = 78064074759132. Its totient is φ = 12692571536000.

The previous prime is 31731428859953. The next prime is 31731428860009. The reversal of 31731428860000 is 6882413713.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31731428860009) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 793265722 + ... + 793305721.

Almost surely, 2^{31731428860000} is an apocalyptic number.

It is an amenable number.

31731428860000 is an abundant number, since it is smaller than the sum of its proper divisors (46332645899132).

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

31731428860000 is an equidigital number, since it uses as much as digits as its factorization.

31731428860000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1586571473 (or 1586571450 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 43.

The spelling of 31731428860000 in words is "thirty-one trillion, seven hundred thirty-one billion, four hundred twenty-eight million, eight hundred sixty thousand".