315142229 has 2 divisors, whose sum is σ = 315142230. Its totient is φ = 315142228.

The previous prime is 315142213. The next prime is 315142231. The reversal of 315142229 is 922241513.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 292341604 + 22800625 = 17098^2 + 4775^2 .

It is a cyclic number.

It is not a de Polignac number, because 315142229 - 2⁴ = 315142213 is a prime.

Together with 315142231, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (315147229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157571114 + 157571115.

It is an arithmetic number, because the mean of its divisors is an integer number (157571115).

Almost surely, 2^315142229 is an apocalyptic number.

It is an amenable number.

315142229 is a deficient number, since it is larger than the sum of its proper divisors (1).

315142229 is an equidigital number, since it uses as much as digits as its factorization.

315142229 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4320, while the sum is 29.

The square root of 315142229 is about 17752.2457452571. The cubic root of 315142229 is about 680.5116024528.

The spelling of 315142229 in words is "three hundred fifteen million, one hundred forty-two thousand, two hundred twenty-nine".