318732679723396 has 81 divisors (see below), whose sum is σ = 579666994130007. Its totient is φ = 153344440394640.

The previous prime is 318732679723391. The next prime is 318732679723421. The reversal of 318732679723396 is 693327976237813.

It is a happy number.

The square root of 318732679723396 is 17853086.

It is a perfect power (a square), and thus also a powerful number.

It is a super-2 number, since 2×318732679723396² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (318732679723391) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 220271374345 + ... + 220271375791.

Almost surely, 2^{318732679723396} is an apocalyptic number.

318732679723396 is the 17853086-th square number.

It is an amenable number.

318732679723396 is a deficient number, since it is larger than the sum of its proper divisors (260934314406611).

318732679723396 is an frugal number, since it uses more digits than its factorization.

318732679723396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3358 (or 1679 counting only the distinct ones).

The product of its digits is 2592487296, while the sum is 76.

The spelling of 318732679723396 in words is "three hundred eighteen trillion, seven hundred thirty-two billion, six hundred seventy-nine million, seven hundred twenty-three thousand, three hundred ninety-six".