315253031 has 2 divisors, whose sum is σ = 315253032. Its totient is φ = 315253030.

The previous prime is 315252943. The next prime is 315253033. The reversal of 315253031 is 130352513.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 315253031 - 2¹⁸ = 314990887 is a prime.

It is a super-2 number, since 2×315253031² = 198768947109373922, which contains 22 as substring.

Together with 315253033, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 315252988 and 315253006.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (315253033) 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, 157626515 + 157626516.

It is an arithmetic number, because the mean of its divisors is an integer number (157626516).

Almost surely, 2^315253031 is an apocalyptic number.

315253031 is a deficient number, since it is larger than the sum of its proper divisors (1).

315253031 is an equidigital number, since it uses as much as digits as its factorization.

315253031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1350, while the sum is 23.

The square root of 315253031 is about 17755.3662592468. The cubic root of 315253031 is about 680.5913476222.

The spelling of 315253031 in words is "three hundred fifteen million, two hundred fifty-three thousand, thirty-one".