315413881 has 4 divisors (see below), whose sum is σ = 329127552. Its totient is φ = 301700212.

The previous prime is 315413843. The next prime is 315413887. The reversal of 315413881 is 188314513.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 315413881 - 2⁷ = 315413753 is a prime.

It is a super-2 number, since 2×315413881² = 198971832654964322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (315413887) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6856801 + ... + 6856846.

It is an arithmetic number, because the mean of its divisors is an integer number (82281888).

Almost surely, 2^315413881 is an apocalyptic number.

It is an amenable number.

315413881 is a deficient number, since it is larger than the sum of its proper divisors (13713671).

315413881 is a wasteful number, since it uses less digits than its factorization.

315413881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13713670.

The product of its digits is 11520, while the sum is 34.

The square root of 315413881 is about 17759.8952981148. The cubic root of 315413881 is about 680.7070795308.

The spelling of 315413881 in words is "three hundred fifteen million, four hundred thirteen thousand, eight hundred eighty-one".