31431113200142 has 32 divisors (see below), whose sum is σ = 48051254046720. Its totient is φ = 15415453478880.

The previous prime is 31431113200133. The next prime is 31431113200171. The reversal of 31431113200142 is 24100231113413.

It is a super-2 number, since 2×31431113200142² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 494113703 + ... + 494177309.

It is an arithmetic number, because the mean of its divisors is an integer number (1501601688960).

Almost surely, 2^{31431113200142} is an apocalyptic number.

31431113200142 is a deficient number, since it is larger than the sum of its proper divisors (16620140846578).

31431113200142 is a wasteful number, since it uses less digits than its factorization.

31431113200142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74736.

The product of its (nonzero) digits is 1728, while the sum is 26.

Adding to 31431113200142 its reverse (24100231113413), we get a palindrome (55531344313555).

The spelling of 31431113200142 in words is "thirty-one trillion, four hundred thirty-one billion, one hundred thirteen million, two hundred thousand, one hundred forty-two".