315420842881 has 8 divisors (see below), whose sum is σ = 326307519720. Its totient is φ = 304534839168.

The previous prime is 315420842873. The next prime is 315420842911. The reversal of 315420842881 is 188248024513.

It can be written as a sum of positive squares in 4 ways, for example, as 12585249856 + 302835593025 = 112184^2 + 550305^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 315420842881 - 2³ = 315420842873 is a prime.

It is a super-2 number, since 2×315420842881² (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 (315420842831) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 900135 + ... + 1200451.

It is an arithmetic number, because the mean of its divisors is an integer number (40788439965).

Almost surely, 2^315420842881 is an apocalyptic number.

It is an amenable number.

315420842881 is a deficient number, since it is larger than the sum of its proper divisors (10886676839).

315420842881 is a wasteful number, since it uses less digits than its factorization.

315420842881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 336563.

The product of its (nonzero) digits is 491520, while the sum is 46.

The spelling of 315420842881 in words is "three hundred fifteen billion, four hundred twenty million, eight hundred forty-two thousand, eight hundred eighty-one".