315323551 has 2 divisors, whose sum is σ = 315323552. Its totient is φ = 315323550.

The previous prime is 315323549. The next prime is 315323581. The reversal of 315323551 is 155323513.

It is a weak prime.

It is an emirp because it is prime and its reverse (155323513) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 315323551 - 2¹ = 315323549 is a prime.

Together with 315323549, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (315323501) 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, 157661775 + 157661776.

It is an arithmetic number, because the mean of its divisors is an integer number (157661776).

Almost surely, 2^315323551 is an apocalyptic number.

315323551 is a deficient number, since it is larger than the sum of its proper divisors (1).

315323551 is an equidigital number, since it uses as much as digits as its factorization.

315323551 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6750, while the sum is 28.

The square root of 315323551 is about 17757.3520266959. The cubic root of 315323551 is about 680.6420917534.

The spelling of 315323551 in words is "three hundred fifteen million, three hundred twenty-three thousand, five hundred fifty-one".