318857297396 has 36 divisors (see below), whose sum is σ = 613845908676. Its totient is φ = 144815383680.

The previous prime is 318857297393. The next prime is 318857297413. The reversal of 318857297396 is 693792758813.

It can be written as a sum of positive squares in 2 ways, for example, as 101943549796 + 216913747600 = 319286^2 + 465740^2 .

It is a super-2 number, since 2×318857297396² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (318857297393) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 315536 + ... + 858648.

It is an arithmetic number, because the mean of its divisors is an integer number (17051275241).

Almost surely, 2^318857297396 is an apocalyptic number.

It is an amenable number.

318857297396 is a deficient number, since it is larger than the sum of its proper divisors (294988611280).

318857297396 is a wasteful number, since it uses less digits than its factorization.

318857297396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 544352 (or 544339 counting only the distinct ones).

The product of its digits is 137168640, while the sum is 68.

The spelling of 318857297396 in words is "three hundred eighteen billion, eight hundred fifty-seven million, two hundred ninety-seven thousand, three hundred ninety-six".