31210531211413 has 2 divisors, whose sum is σ = 31210531211414. Its totient is φ = 31210531211412.

The previous prime is 31210531211393. The next prime is 31210531211437. The reversal of 31210531211413 is 31411213501213.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17846586128484 + 13363945082929 = 4224522^2 + 3655673^2 .

It is a cyclic number.

It is not a de Polignac number, because 31210531211413 - 2²⁵ = 31210497656981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31210531211473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15605265605706 + 15605265605707.

It is an arithmetic number, because the mean of its divisors is an integer number (15605265605707).

Almost surely, 2^{31210531211413} is an apocalyptic number.

It is an amenable number.

31210531211413 is a deficient number, since it is larger than the sum of its proper divisors (1).

31210531211413 is an equidigital number, since it uses as much as digits as its factorization.

31210531211413 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2160, while the sum is 28.

Adding to 31210531211413 its reverse (31411213501213), we get a palindrome (62621744712626).

The spelling of 31210531211413 in words is "thirty-one trillion, two hundred ten billion, five hundred thirty-one million, two hundred eleven thousand, four hundred thirteen".