31472803143208 has 64 divisors (see below), whose sum is σ = 67770126040320. Its totient is φ = 13422772262400.

The previous prime is 31472803143203. The next prime is 31472803143277. The reversal of 31472803143208 is 80234130827413.

It is a super-2 number, since 2×31472803143208² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (31472803143203) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12723588 + ... + 14994508.

It is an arithmetic number, because the mean of its divisors is an integer number (1058908219380).

Almost surely, 2^{31472803143208} is an apocalyptic number.

It is an amenable number.

31472803143208 is an abundant number, since it is smaller than the sum of its proper divisors (36297322897112).

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

31472803143208 is a wasteful number, since it uses less digits than its factorization.

31472803143208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2272138 (or 2272134 counting only the distinct ones).

The product of its (nonzero) digits is 774144, while the sum is 46.

The spelling of 31472803143208 in words is "thirty-one trillion, four hundred seventy-two billion, eight hundred three million, one hundred forty-three thousand, two hundred eight".