315045169 has 2 divisors, whose sum is σ = 315045170. Its totient is φ = 315045168.

The previous prime is 315045167. The next prime is 315045179. The reversal of 315045169 is 961540513.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 296252944 + 18792225 = 17212^2 + 4335^2 .

It is an emirp because it is prime and its reverse (961540513) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 315045169 - 2¹ = 315045167 is a prime.

It is a super-2 number, since 2×315045169² = 198506917020477122, which contains 22 as substring.

Together with 315045167, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (315045167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157522584 + 157522585.

It is an arithmetic number, because the mean of its divisors is an integer number (157522585).

Almost surely, 2^315045169 is an apocalyptic number.

It is an amenable number.

315045169 is a deficient number, since it is larger than the sum of its proper divisors (1).

315045169 is an equidigital number, since it uses as much as digits as its factorization.

315045169 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16200, while the sum is 34.

The square root of 315045169 is about 17749.5117961030. The cubic root of 315045169 is about 680.4417321613.

The spelling of 315045169 in words is "three hundred fifteen million, forty-five thousand, one hundred sixty-nine".