31240343324104 has 32 divisors (see below), whose sum is σ = 59835937086720. Its totient is φ = 15284249024256.

The previous prime is 31240343324093. The next prime is 31240343324153. The reversal of 31240343324104 is 40142334304213.

It is a self number, because there is not a number n which added to its sum of digits gives 31240343324104.

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, 8115564 + ... + 11328859.

It is an arithmetic number, because the mean of its divisors is an integer number (1869873033960).

Almost surely, 2^{31240343324104} is an apocalyptic number.

It is an amenable number.

31240343324104 is a deficient number, since it is larger than the sum of its proper divisors (28595593762616).

31240343324104 is a wasteful number, since it uses less digits than its factorization.

31240343324104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19448749 (or 19448745 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 34.

Adding to 31240343324104 its reverse (40142334304213), we get a palindrome (71382677628317).

The spelling of 31240343324104 in words is "thirty-one trillion, two hundred forty billion, three hundred forty-three million, three hundred twenty-four thousand, one hundred four".