315445234565213 has 2 divisors, whose sum is σ = 315445234565214. Its totient is φ = 315445234565212.

The previous prime is 315445234565207. The next prime is 315445234565243. The reversal of 315445234565213 is 312565432544513.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 218537000302009 + 96908234263204 = 14782997^2 + 9844198^2 .

It is an emirp because it is prime and its reverse (312565432544513) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 315445234565213 - 2³⁶ = 315376515088477 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (315445234565243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157722617282606 + 157722617282607.

It is an arithmetic number, because the mean of its divisors is an integer number (157722617282607).

Almost surely, 2^{315445234565213} is an apocalyptic number.

It is an amenable number.

315445234565213 is a deficient number, since it is larger than the sum of its proper divisors (1).

315445234565213 is an equidigital number, since it uses as much as digits as its factorization.

315445234565213 is an evil number, because the sum of its binary digits is even.

The product of its digits is 25920000, while the sum is 53.

The spelling of 315445234565213 in words is "three hundred fifteen trillion, four hundred forty-five billion, two hundred thirty-four million, five hundred sixty-five thousand, two hundred thirteen".