31471572660 has 96 divisors (see below), whose sum is σ = 101786170752. Its totient is φ = 7180677120.

The previous prime is 31471572631. The next prime is 31471572667. The reversal of 31471572660 is 6627517413.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31471572667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1391257 + ... + 1413696.

It is an arithmetic number, because the mean of its divisors is an integer number (1060272612).

Almost surely, 2^31471572660 is an apocalyptic number.

31471572660 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

31471572660 is an abundant number, since it is smaller than the sum of its proper divisors (70314598092).

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

31471572660 is a wasteful number, since it uses less digits than its factorization.

31471572660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2804993 (or 2804991 counting only the distinct ones).

The product of its (nonzero) digits is 211680, while the sum is 42.

The spelling of 31471572660 in words is "thirty-one billion, four hundred seventy-one million, five hundred seventy-two thousand, six hundred sixty".