315807449 has 2 divisors, whose sum is σ = 315807450. Its totient is φ = 315807448.

The previous prime is 315807439. The next prime is 315807463. The reversal of 315807449 is 944708513.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 315701824 + 105625 = 17768^2 + 325^2 .

It is a cyclic number.

It is not a de Polignac number, because 315807449 - 2⁴ = 315807433 is a prime.

It is a super-3 number, since 3×315807449³ (a number of 26 digits) contains 333 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (315807439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157903724 + 157903725.

It is an arithmetic number, because the mean of its divisors is an integer number (157903725).

Almost surely, 2^315807449 is an apocalyptic number.

It is an amenable number.

315807449 is a deficient number, since it is larger than the sum of its proper divisors (1).

315807449 is an equidigital number, since it uses as much as digits as its factorization.

315807449 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 120960, while the sum is 41.

The square root of 315807449 is about 17770.9720893372. The cubic root of 315807449 is about 680.9900867036.

The spelling of 315807449 in words is "three hundred fifteen million, eight hundred seven thousand, four hundred forty-nine".