315021479 has 2 divisors, whose sum is σ = 315021480. Its totient is φ = 315021478.

The previous prime is 315021449. The next prime is 315021481. The reversal of 315021479 is 974120513.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 315021479 - 2¹⁶ = 314955943 is a prime.

Together with 315021481, 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 (315021419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157510739 + 157510740.

It is an arithmetic number, because the mean of its divisors is an integer number (157510740).

Almost surely, 2^315021479 is an apocalyptic number.

315021479 is a deficient number, since it is larger than the sum of its proper divisors (1).

315021479 is an equidigital number, since it uses as much as digits as its factorization.

315021479 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7560, while the sum is 32.

The square root of 315021479 is about 17748.8444412587. The cubic root of 315021479 is about 680.4246763332.

The spelling of 315021479 in words is "three hundred fifteen million, twenty-one thousand, four hundred seventy-nine".