315236279 has 2 divisors, whose sum is σ = 315236280. Its totient is φ = 315236278.

The previous prime is 315236261. The next prime is 315236281. The reversal of 315236279 is 972632513.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 315236279 - 2²⁸ = 46800823 is a prime.

Together with 315236281, 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 (315236879) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157618139 + 157618140.

It is an arithmetic number, because the mean of its divisors is an integer number (157618140).

Almost surely, 2^315236279 is an apocalyptic number.

315236279 is a deficient number, since it is larger than the sum of its proper divisors (1).

315236279 is an equidigital number, since it uses as much as digits as its factorization.

315236279 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 68040, while the sum is 38.

The square root of 315236279 is about 17754.8945082757. The cubic root of 315236279 is about 680.5792922602.

The spelling of 315236279 in words is "three hundred fifteen million, two hundred thirty-six thousand, two hundred seventy-nine".