318722248144 has 10 divisors (see below), whose sum is σ = 617524355810. Its totient is φ = 159361124064.

The previous prime is 318722247931. The next prime is 318722248151. The reversal of 318722248144 is 441842227813.

It can be written as a sum of positive squares in only one way, i.e., 279671745600 + 39050502544 = 528840^2 + 197612^2 .

It is a super-2 number, since 2×318722248144² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 318722248094 and 318722248103.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9960070239 + ... + 9960070270.

It is an arithmetic number, because the mean of its divisors is an integer number (61752435581).

Almost surely, 2^318722248144 is an apocalyptic number.

It is an amenable number.

318722248144 is a deficient number, since it is larger than the sum of its proper divisors (298802107666).

318722248144 is a wasteful number, since it uses less digits than its factorization.

318722248144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19920140517 (or 19920140511 counting only the distinct ones).

The product of its digits is 688128, while the sum is 46.

The spelling of 318722248144 in words is "three hundred eighteen billion, seven hundred twenty-two million, two hundred forty-eight thousand, one hundred forty-four".