31728860031460 has 12 divisors (see below), whose sum is σ = 66630606066108. Its totient is φ = 12691544012576.

The previous prime is 31728860031457. The next prime is 31728860031523. The reversal of 31728860031460 is 6413006882713.

It can be written as a sum of positive squares in 2 ways, for example, as 18777800888896 + 12951059142564 = 4333336^2 + 3598758^2 .

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, 793221500767 + ... + 793221500806.

It is an arithmetic number, because the mean of its divisors is an integer number (5552550505509).

Almost surely, 2^{31728860031460} is an apocalyptic number.

It is an amenable number.

31728860031460 is an abundant number, since it is smaller than the sum of its proper divisors (34901746034648).

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

31728860031460 is a wasteful number, since it uses less digits than its factorization.

31728860031460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1586443001582 (or 1586443001580 counting only the distinct ones).

The product of its (nonzero) digits is 1161216, while the sum is 49.

The spelling of 31728860031460 in words is "thirty-one trillion, seven hundred twenty-eight billion, eight hundred sixty million, thirty-one thousand, four hundred sixty".