315056849 has 2 divisors, whose sum is σ = 315056850. Its totient is φ = 315056848.

The previous prime is 315056837. The next prime is 315056851. The reversal of 315056849 is 948650513.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 310464400 + 4592449 = 17620^2 + 2143^2 .

It is a cyclic number.

It is not a de Polignac number, because 315056849 - 2¹² = 315052753 is a prime.

Together with 315056851, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (315056809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157528424 + 157528425.

It is an arithmetic number, because the mean of its divisors is an integer number (157528425).

Almost surely, 2^315056849 is an apocalyptic number.

It is an amenable number.

315056849 is a deficient number, since it is larger than the sum of its proper divisors (1).

315056849 is an equidigital number, since it uses as much as digits as its factorization.

315056849 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 129600, while the sum is 41.

The square root of 315056849 is about 17749.8408161876. The cubic root of 315056849 is about 680.4501409674.

The spelling of 315056849 in words is "three hundred fifteen million, fifty-six thousand, eight hundred forty-nine".