31431113143104 has 56 divisors (see below), whose sum is σ = 85844115482368. Its totient is φ = 10139068753920.

The previous prime is 31431113143091. The next prime is 31431113143127. The reversal of 31431113143104 is 40134131113413.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2640376537 + ... + 2640388440.

Almost surely, 2^{31431113143104} is an apocalyptic number.

It is an amenable number.

31431113143104 is an abundant number, since it is smaller than the sum of its proper divisors (54413002339264).

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

31431113143104 is a wasteful number, since it uses less digits than its factorization.

31431113143104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5280765023 (or 5280765013 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 30.

Adding to 31431113143104 its reverse (40134131113413), we get a palindrome (71565244256517).

The spelling of 31431113143104 in words is "thirty-one trillion, four hundred thirty-one billion, one hundred thirteen million, one hundred forty-three thousand, one hundred four".