315868451 has 2 divisors, whose sum is σ = 315868452. Its totient is φ = 315868450.

The previous prime is 315868439. The next prime is 315868471. The reversal of 315868451 is 154868513.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 315868451 - 2¹⁸ = 315606307 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 315868399 and 315868408.

It is not a weakly prime, because it can be changed into another prime (315868471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157934225 + 157934226.

It is an arithmetic number, because the mean of its divisors is an integer number (157934226).

Almost surely, 2^315868451 is an apocalyptic number.

315868451 is a deficient number, since it is larger than the sum of its proper divisors (1).

315868451 is an equidigital number, since it uses as much as digits as its factorization.

315868451 is an evil number, because the sum of its binary digits is even.

The product of its digits is 115200, while the sum is 41.

The square root of 315868451 is about 17772.6883447609. The cubic root of 315868451 is about 681.0339310175.

The spelling of 315868451 in words is "three hundred fifteen million, eight hundred sixty-eight thousand, four hundred fifty-one".