315420405 has 16 divisors (see below), whose sum is σ = 506689344. Its totient is φ = 167552000.

The previous prime is 315420401. The next prime is 315420409. The reversal of 315420405 is 504024513.

It is an interprime number because it is at equal distance from previous prime (315420401) and next prime (315420409).

It is not a de Polignac number, because 315420405 - 2² = 315420401 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (315420401) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38124 + ... + 45653.

It is an arithmetic number, because the mean of its divisors is an integer number (31668084).

Almost surely, 2^315420405 is an apocalyptic number.

It is an amenable number.

315420405 is a deficient number, since it is larger than the sum of its proper divisors (191268939).

315420405 is a wasteful number, since it uses less digits than its factorization.

315420405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84036.

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 315420405 is about 17760.0789694190. The cubic root of 315420405 is about 680.7117727319.

Adding to 315420405 its reverse (504024513), we get a palindrome (819444918).

The spelling of 315420405 in words is "three hundred fifteen million, four hundred twenty thousand, four hundred five".