315122424215 has 4 divisors (see below), whose sum is σ = 378146909064. Its totient is φ = 252097939368.

The previous prime is 315122424209. The next prime is 315122424223. The reversal of 315122424215 is 512424221513.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 512424221513 = 251 ⋅2041530763.

It is a cyclic number.

It is not a de Polignac number, because 315122424215 - 2⁶ = 315122424151 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31512242417 + ... + 31512242426.

It is an arithmetic number, because the mean of its divisors is an integer number (94536727266).

Almost surely, 2^315122424215 is an apocalyptic number.

315122424215 is a deficient number, since it is larger than the sum of its proper divisors (63024484849).

315122424215 is an equidigital number, since it uses as much as digits as its factorization.

315122424215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63024484848.

The product of its digits is 19200, while the sum is 32.

Adding to 315122424215 its reverse (512424221513), we get a palindrome (827546645728).

The spelling of 315122424215 in words is "three hundred fifteen billion, one hundred twenty-two million, four hundred twenty-four thousand, two hundred fifteen".