318018312 has 40 divisors (see below), whose sum is σ = 890747550. Its totient is φ = 106005888.

The previous prime is 318018277. The next prime is 318018317. The reversal of 318018312 is 213810813.

It can be written as a sum of positive squares in only one way, i.e., 198640836 + 119377476 = 14094^2 + 10926^2 .

It is a super-2 number, since 2×318018312² = 202271293534658688, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (318018317) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 244737 + ... + 246032.

Almost surely, 2^318018312 is an apocalyptic number.

It is an amenable number.

318018312 is an abundant number, since it is smaller than the sum of its proper divisors (572729238).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

318018312 is a wasteful number, since it uses less digits than its factorization.

318018312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 490787 (or 490774 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

The square root of 318018312 is about 17833.0679357199. The cubic root of 318018312 is about 682.5755211684.

The spelling of 318018312 in words is "three hundred eighteen million, eighteen thousand, three hundred twelve".