315142237 has 2 divisors, whose sum is σ = 315142238. Its totient is φ = 315142236.

The previous prime is 315142231. The next prime is 315142253. The reversal of 315142237 is 732241513.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 202379076 + 112763161 = 14226^2 + 10619^2 .

It is a cyclic number.

It is not a de Polignac number, because 315142237 - 2³ = 315142229 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (315142231) 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, 157571118 + 157571119.

It is an arithmetic number, because the mean of its divisors is an integer number (157571119).

Almost surely, 2^315142237 is an apocalyptic number.

It is an amenable number.

315142237 is a deficient number, since it is larger than the sum of its proper divisors (1).

315142237 is an equidigital number, since it uses as much as digits as its factorization.

315142237 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5040, while the sum is 28.

The square root of 315142237 is about 17752.2459705807. The cubic root of 315142237 is about 680.5116082111.

The spelling of 315142237 in words is "three hundred fifteen million, one hundred forty-two thousand, two hundred thirty-seven".