315215153137 has 2 divisors, whose sum is σ = 315215153138. Its totient is φ = 315215153136.

The previous prime is 315215153063. The next prime is 315215153159. The reversal of 315215153137 is 731351512513.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 174181857201 + 141033295936 = 417351^2 + 375544^2 .

It is a cyclic number.

It is not a de Polignac number, because 315215153137 - 2¹¹ = 315215151089 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 315215153096 and 315215153105.

It is not a weakly prime, because it can be changed into another prime (315215153167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157607576568 + 157607576569.

It is an arithmetic number, because the mean of its divisors is an integer number (157607576569).

Almost surely, 2^315215153137 is an apocalyptic number.

It is an amenable number.

315215153137 is a deficient number, since it is larger than the sum of its proper divisors (1).

315215153137 is an equidigital number, since it uses as much as digits as its factorization.

315215153137 is an evil number, because the sum of its binary digits is even.

The product of its digits is 47250, while the sum is 37.

The spelling of 315215153137 in words is "three hundred fifteen billion, two hundred fifteen million, one hundred fifty-three thousand, one hundred thirty-seven".