315969096881 has 4 divisors (see below), whose sum is σ = 315970336500. Its totient is φ = 315967857264.

The previous prime is 315969096853. The next prime is 315969096907. The reversal of 315969096881 is 188690969513.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 244842873856 + 71126223025 = 494816^2 + 266695^2 .

It is a cyclic number.

It is not a de Polignac number, because 315969096881 - 2³⁴ = 298789227697 is a prime.

It is a super-2 number, since 2×315969096881² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (315969096181) 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, 81806 + ... + 799143.

It is an arithmetic number, because the mean of its divisors is an integer number (78992584125).

Almost surely, 2^315969096881 is an apocalyptic number.

It is an amenable number.

315969096881 is a deficient number, since it is larger than the sum of its proper divisors (1239619).

315969096881 is an equidigital number, since it uses as much as digits as its factorization.

315969096881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1239618.

The product of its (nonzero) digits is 25194240, while the sum is 65.

The spelling of 315969096881 in words is "three hundred fifteen billion, nine hundred sixty-nine million, ninety-six thousand, eight hundred eighty-one".