31213410343112 has 32 divisors (see below), whose sum is σ = 59244663151800. Its totient is φ = 15415465703424.

The previous prime is 31213410343079. The next prime is 31213410343183. The reversal of 31213410343112 is 21134301431213.

It can be written as a sum of positive squares in 4 ways, for example, as 28804538724196 + 2408871618916 = 5366986^2 + 1552054^2 .

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, 39117263 + ... + 39907230.

Almost surely, 2^{31213410343112} is an apocalyptic number.

It is an amenable number.

31213410343112 is a deficient number, since it is larger than the sum of its proper divisors (28031252808688).

31213410343112 is a wasteful number, since it uses less digits than its factorization.

31213410343112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79025105 (or 79025101 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 29.

Adding to 31213410343112 its reverse (21134301431213), we get a palindrome (52347711774325).

The spelling of 31213410343112 in words is "thirty-one trillion, two hundred thirteen billion, four hundred ten million, three hundred forty-three thousand, one hundred twelve".