315031542313 has 2 divisors, whose sum is σ = 315031542314. Its totient is φ = 315031542312.

The previous prime is 315031542283. The next prime is 315031542337. The reversal of 315031542313 is 313245130513.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 221005292544 + 94026249769 = 470112^2 + 306637^2 .

It is a cyclic number.

It is not a de Polignac number, because 315031542313 - 2²⁵ = 314997987881 is a prime.

It is not a weakly prime, because it can be changed into another prime (315031542113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157515771156 + 157515771157.

It is an arithmetic number, because the mean of its divisors is an integer number (157515771157).

Almost surely, 2^315031542313 is an apocalyptic number.

It is an amenable number.

315031542313 is a deficient number, since it is larger than the sum of its proper divisors (1).

315031542313 is an equidigital number, since it uses as much as digits as its factorization.

315031542313 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16200, while the sum is 31.

Adding to 315031542313 its reverse (313245130513), we get a palindrome (628276672826).

The spelling of 315031542313 in words is "three hundred fifteen billion, thirty-one million, five hundred forty-two thousand, three hundred thirteen".