315161201 has 2 divisors, whose sum is σ = 315161202. Its totient is φ = 315161200.

The previous prime is 315161177. The next prime is 315161213. The reversal of 315161201 is 102161513.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 273571600 + 41589601 = 16540^2 + 6449^2 .

It is an emirp because it is prime and its reverse (102161513) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 315161201 - 2¹⁰ = 315160177 is a prime.

It is not a weakly prime, because it can be changed into another prime (315161281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157580600 + 157580601.

It is an arithmetic number, because the mean of its divisors is an integer number (157580601).

Almost surely, 2^315161201 is an apocalyptic number.

It is an amenable number.

315161201 is a deficient number, since it is larger than the sum of its proper divisors (1).

315161201 is an equidigital number, since it uses as much as digits as its factorization.

315161201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 180, while the sum is 20.

The square root of 315161201 is about 17752.7800921433. The cubic root of 315161201 is about 680.5252580934.

The spelling of 315161201 in words is "three hundred fifteen million, one hundred sixty-one thousand, two hundred one".