31431160181156 has 12 divisors (see below), whose sum is σ = 55031882161200. Its totient is φ = 15707765277960.

The previous prime is 31431160181143. The next prime is 31431160181209. The reversal of 31431160181156 is 65118106113413.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 1953694106 + ... + 1953710193.

It is an arithmetic number, because the mean of its divisors is an integer number (4585990180100).

Almost surely, 2^{31431160181156} is an apocalyptic number.

It is an amenable number.

31431160181156 is a deficient number, since it is larger than the sum of its proper divisors (23600721980044).

31431160181156 is a wasteful number, since it uses less digits than its factorization.

31431160181156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3907406314 (or 3907406312 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 41.

Adding to 31431160181156 its reverse (65118106113413), we get a palindrome (96549266294569).

The spelling of 31431160181156 in words is "thirty-one trillion, four hundred thirty-one billion, one hundred sixty million, one hundred eighty-one thousand, one hundred fifty-six".