323131441021013 has 2 divisors, whose sum is σ = 323131441021014. Its totient is φ = 323131441021012.

The previous prime is 323131441020961. The next prime is 323131441021021. The reversal of 323131441021013 is 310120144131323.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 293176650249604 + 29954790771409 = 17122402^2 + 5473097^2 .

It is a cyclic number.

It is not a de Polignac number, because 323131441021013 - 2⁴⁴ = 305539254976597 is a prime.

It is a super-4 number, since 4×323131441021013⁴ (a number of 59 digits) contains 4444 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (323131441021513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 161565720510506 + 161565720510507.

It is an arithmetic number, because the mean of its divisors is an integer number (161565720510507).

Almost surely, 2^{323131441021013} is an apocalyptic number.

It is an amenable number.

323131441021013 is a deficient number, since it is larger than the sum of its proper divisors (1).

323131441021013 is an equidigital number, since it uses as much as digits as its factorization.

323131441021013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 29.

Adding to 323131441021013 its reverse (310120144131323), we get a palindrome (633251585152336).

The spelling of 323131441021013 in words is "three hundred twenty-three trillion, one hundred thirty-one billion, four hundred forty-one million, twenty-one thousand, thirteen".