315327161 has 2 divisors, whose sum is σ = 315327162. Its totient is φ = 315327160.

The previous prime is 315327119. The next prime is 315327293. The reversal of 315327161 is 161723513.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 289000000 + 26327161 = 17000^2 + 5131^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-315327161 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (315327461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157663580 + 157663581.

It is an arithmetic number, because the mean of its divisors is an integer number (157663581).

Almost surely, 2^315327161 is an apocalyptic number.

It is an amenable number.

315327161 is a deficient number, since it is larger than the sum of its proper divisors (1).

315327161 is an equidigital number, since it uses as much as digits as its factorization.

315327161 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3780, while the sum is 29.

The square root of 315327161 is about 17757.4536744433. The cubic root of 315327161 is about 680.6446892004.

The spelling of 315327161 in words is "three hundred fifteen million, three hundred twenty-seven thousand, one hundred sixty-one".