3121532351213 has 2 divisors, whose sum is σ = 3121532351214. Its totient is φ = 3121532351212.

The previous prime is 3121532351191. The next prime is 3121532351219.

3121532351213 is nontrivially palindromic in base 10.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3102945664324 + 18586686889 = 1761518^2 + 136333^2 .

It is a palprime.

It is a cyclic number.

It is not a de Polignac number, because 3121532351213 - 2¹² = 3121532347117 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3121532351213.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3121532351219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1560766175606 + 1560766175607.

It is an arithmetic number, because the mean of its divisors is an integer number (1560766175607).

Almost surely, 2^{3121532351213} is an apocalyptic number.

It is an amenable number.

3121532351213 is a deficient number, since it is larger than the sum of its proper divisors (1).

3121532351213 is an equidigital number, since it uses as much as digits as its factorization.

3121532351213 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16200, while the sum is 32.

The spelling of 3121532351213 in words is "three trillion, one hundred twenty-one billion, five hundred thirty-two million, three hundred fifty-one thousand, two hundred thirteen".