31312531062401 has 4 divisors (see below), whose sum is σ = 31312894137792. Its totient is φ = 31312167987012.

The previous prime is 31312531062349. The next prime is 31312531062451. The reversal of 31312531062401 is 10426013521313.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 31312531062401 - 2²² = 31312526868097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31312531062451) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 181408301 + ... + 181580826.

It is an arithmetic number, because the mean of its divisors is an integer number (7828223534448).

Almost surely, 2^{31312531062401} is an apocalyptic number.

It is an amenable number.

31312531062401 is a deficient number, since it is larger than the sum of its proper divisors (363075391).

31312531062401 is an equidigital number, since it uses as much as digits as its factorization.

31312531062401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 363075390.

The product of its (nonzero) digits is 12960, while the sum is 32.

Adding to 31312531062401 its reverse (10426013521313), we get a palindrome (41738544583714).

The spelling of 31312531062401 in words is "thirty-one trillion, three hundred twelve billion, five hundred thirty-one million, sixty-two thousand, four hundred one".