318861308207 has 6 divisors (see below), whose sum is σ = 345275854632. Its totient is φ = 294333515112.

The previous prime is 318861308179. The next prime is 318861308251. The reversal of 318861308207 is 702803168813.

It is a happy number.

It is not a de Polignac number, because 318861308207 - 2⁸ = 318861307951 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (318861308287) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 943376483 + ... + 943376820.

It is an arithmetic number, because the mean of its divisors is an integer number (57545975772).

Almost surely, 2^318861308207 is an apocalyptic number.

318861308207 is a deficient number, since it is larger than the sum of its proper divisors (26414546425).

318861308207 is a wasteful number, since it uses less digits than its factorization.

318861308207 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1886753329 (or 1886753316 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 47.

The spelling of 318861308207 in words is "three hundred eighteen billion, eight hundred sixty-one million, three hundred eight thousand, two hundred seven".