31213224040132 has 24 divisors (see below), whose sum is σ = 54716731629560. Its totient is φ = 15579874713600.

The previous prime is 31213224040109. The next prime is 31213224040151. The reversal of 31213224040132 is 23104042231213.

It can be written as a sum of positive squares in 4 ways, for example, as 13364829770436 + 17848394269696 = 3655794^2 + 4224736^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 31213224040132.

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, 50003128 + ... + 50623504.

Almost surely, 2^{31213224040132} is an apocalyptic number.

It is an amenable number.

31213224040132 is a deficient number, since it is larger than the sum of its proper divisors (23503507589428).

31213224040132 is a wasteful number, since it uses less digits than its factorization.

31213224040132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 641911 (or 641909 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 28.

Adding to 31213224040132 its reverse (23104042231213), we get a palindrome (54317266271345).

The spelling of 31213224040132 in words is "thirty-one trillion, two hundred thirteen billion, two hundred twenty-four million, forty thousand, one hundred thirty-two".