31145131234422 has 12 divisors (see below), whose sum is σ = 67481117674620. Its totient is φ = 10381710411468.

The previous prime is 31145131234387. The next prime is 31145131234453. The reversal of 31145131234422 is 22443213154113.

31145131234422 is a `hidden beast` number, since 3 + 1 + 14 + 513 + 123 + 4 + 4 + 2 + 2 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 865142534272 + ... + 865142534307.

It is an arithmetic number, because the mean of its divisors is an integer number (5623426472885).

Almost surely, 2^{31145131234422} is an apocalyptic number.

31145131234422 is an abundant number, since it is smaller than the sum of its proper divisors (36335986440198).

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

31145131234422 is a wasteful number, since it uses less digits than its factorization.

31145131234422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1730285068587 (or 1730285068584 counting only the distinct ones).

The product of its digits is 69120, while the sum is 36.

Adding to 31145131234422 its reverse (22443213154113), we get a palindrome (53588344388535).

The spelling of 31145131234422 in words is "thirty-one trillion, one hundred forty-five billion, one hundred thirty-one million, two hundred thirty-four thousand, four hundred twenty-two".