315222113 has 2 divisors, whose sum is σ = 315222114. Its totient is φ = 315222112.

The previous prime is 315222077. The next prime is 315222137. The reversal of 315222113 is 311222513.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 314601169 + 620944 = 17737^2 + 788^2 .

It is a cyclic number.

It is not a de Polignac number, because 315222113 - 2¹² = 315218017 is a prime.

It is not a weakly prime, because it can be changed into another prime (315222913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157611056 + 157611057.

It is an arithmetic number, because the mean of its divisors is an integer number (157611057).

Almost surely, 2^315222113 is an apocalyptic number.

It is an amenable number.

315222113 is a deficient number, since it is larger than the sum of its proper divisors (1).

315222113 is an equidigital number, since it uses as much as digits as its factorization.

315222113 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 360, while the sum is 20.

The square root of 315222113 is about 17754.4955715447. The cubic root of 315222113 is about 680.5690975467.

Adding to 315222113 its reverse (311222513), we get a palindrome (626444626).

The spelling of 315222113 in words is "three hundred fifteen million, two hundred twenty-two thousand, one hundred thirteen".