318139066 has 12 divisors (see below), whose sum is σ = 555120378. Its totient is φ = 136345272.

The previous prime is 318139057. The next prime is 318139067. The reversal of 318139066 is 660931813.

It can be written as a sum of positive squares in only one way, i.e., 196588441 + 121550625 = 14021^2 + 11025^2 .

It is not an unprimeable number, because it can be changed into a prime (318139067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1623061 + ... + 1623256.

Almost surely, 2^318139066 is an apocalyptic number.

318139066 is a deficient number, since it is larger than the sum of its proper divisors (236981312).

318139066 is a wasteful number, since it uses less digits than its factorization.

318139066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3246333 (or 3246326 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 37.

The square root of 318139066 is about 17836.4532909432. The cubic root of 318139066 is about 682.6619032951.

The spelling of 318139066 in words is "three hundred eighteen million, one hundred thirty-nine thousand, sixty-six".