315234137 has 2 divisors, whose sum is σ = 315234138. Its totient is φ = 315234136.

The previous prime is 315234079. The next prime is 315234151. The reversal of 315234137 is 731432513.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 307511296 + 7722841 = 17536^2 + 2779^2 .

It is a cyclic number.

It is not a de Polignac number, because 315234137 - 2²⁸ = 46798681 is a prime.

It is a super-3 number, since 3×315234137³ (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (315234197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157617068 + 157617069.

It is an arithmetic number, because the mean of its divisors is an integer number (157617069).

Almost surely, 2^315234137 is an apocalyptic number.

It is an amenable number.

315234137 is a deficient number, since it is larger than the sum of its proper divisors (1).

315234137 is an equidigital number, since it uses as much as digits as its factorization.

315234137 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7560, while the sum is 29.

The square root of 315234137 is about 17754.8341867785. The cubic root of 315234137 is about 680.5777507666.

The spelling of 315234137 in words is "three hundred fifteen million, two hundred thirty-four thousand, one hundred thirty-seven".