318831468722 has 18 divisors (see below), whose sum is σ = 517882176567. Its totient is φ = 147148194336.

The previous prime is 318831468721. The next prime is 318831468727. The reversal of 318831468722 is 227864138813.

It can be written as a sum of positive squares in 5 ways, for example, as 182883667201 + 135947801521 = 427649^2 + 368711^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=399269.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (318831468721) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 10365638 + ... + 10396350.

Almost surely, 2^318831468722 is an apocalyptic number.

318831468722 is a deficient number, since it is larger than the sum of its proper divisors (199050707845).

318831468722 is an frugal number, since it uses more digits than its factorization.

318831468722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61454 (or 30728 counting only the distinct ones).

The product of its digits is 3096576, while the sum is 53.

The spelling of 318831468722 in words is "three hundred eighteen billion, eight hundred thirty-one million, four hundred sixty-eight thousand, seven hundred twenty-two".