315511297 has 2 divisors, whose sum is σ = 315511298. Its totient is φ = 315511296.

The previous prime is 315511249. The next prime is 315511349. The reversal of 315511297 is 792115513.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 308494096 + 7017201 = 17564^2 + 2649^2 .

It is a cyclic number.

It is not a de Polignac number, because 315511297 - 2²³ = 307122689 is a prime.

It is not a weakly prime, because it can be changed into another prime (315511237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157755648 + 157755649.

It is an arithmetic number, because the mean of its divisors is an integer number (157755649).

Almost surely, 2^315511297 is an apocalyptic number.

It is an amenable number.

315511297 is a deficient number, since it is larger than the sum of its proper divisors (1).

315511297 is an equidigital number, since it uses as much as digits as its factorization.

315511297 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9450, while the sum is 34.

The square root of 315511297 is about 17762.6376701210. The cubic root of 315511297 is about 680.7771514154. Note that the first 3 decimals are identical.

The spelling of 315511297 in words is "three hundred fifteen million, five hundred eleven thousand, two hundred ninety-seven".