318706937145 has 20 divisors (see below), whose sum is σ = 571311695460. Its totient is φ = 169977032928.

The previous prime is 318706937141. The next prime is 318706937179. The reversal of 318706937145 is 541739607813.

It can be written as a sum of positive squares in 2 ways, for example, as 133859393424 + 184847543721 = 365868^2 + 429939^2 .

It is not a de Polignac number, because 318706937145 - 2² = 318706937141 is a prime.

It is a super-2 number, since 2×318706937145² (a number of 24 digits) contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 318706937091 and 318706937100.

It is not an unprimeable number, because it can be changed into a prime (318706937141) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 393464950 + ... + 393465759.

It is an arithmetic number, because the mean of its divisors is an integer number (28565584773).

Almost surely, 2^318706937145 is an apocalyptic number.

It is an amenable number.

318706937145 is a deficient number, since it is larger than the sum of its proper divisors (252604758315).

318706937145 is an equidigital number, since it uses as much as digits as its factorization.

318706937145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 786930726 (or 786930717 counting only the distinct ones).

The product of its (nonzero) digits is 3810240, while the sum is 54.

The spelling of 318706937145 in words is "three hundred eighteen billion, seven hundred six million, nine hundred thirty-seven thousand, one hundred forty-five".