31325253540 has 96 divisors (see below), whose sum is σ = 100264039680. Its totient is φ = 7158398976.

The previous prime is 31325253539. The next prime is 31325253593. The reversal of 31325253540 is 4535252313.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3503796 + ... + 3512724.

It is an arithmetic number, because the mean of its divisors is an integer number (1044417080).

Almost surely, 2^31325253540 is an apocalyptic number.

31325253540 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

31325253540 is an abundant number, since it is smaller than the sum of its proper divisors (68938786140).

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

31325253540 is a wasteful number, since it uses less digits than its factorization.

31325253540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17301 (or 17299 counting only the distinct ones).

The product of its (nonzero) digits is 54000, while the sum is 33.

The spelling of 31325253540 in words is "thirty-one billion, three hundred twenty-five million, two hundred fifty-three thousand, five hundred forty".