315748651 has 2 divisors, whose sum is σ = 315748652. Its totient is φ = 315748650.

The previous prime is 315748637. The next prime is 315748673. The reversal of 315748651 is 156847513.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (156847513) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 315748651 - 2⁵ = 315748619 is a prime.

It is not a weakly prime, because it can be changed into another prime (315748681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157874325 + 157874326.

It is an arithmetic number, because the mean of its divisors is an integer number (157874326).

Almost surely, 2^315748651 is an apocalyptic number.

315748651 is a deficient number, since it is larger than the sum of its proper divisors (1).

315748651 is an equidigital number, since it uses as much as digits as its factorization.

315748651 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 100800, while the sum is 40.

The square root of 315748651 is about 17769.3176852686. The cubic root of 315748651 is about 680.9478211391.

The spelling of 315748651 in words is "three hundred fifteen million, seven hundred forty-eight thousand, six hundred fifty-one".