318187317129 has 12 divisors (see below), whose sum is σ = 466324112688. Its totient is φ = 192840798040.

The previous prime is 318187317113. The next prime is 318187317181. The reversal of 318187317129 is 921713781813.

It is not a de Polignac number, because 318187317129 - 2⁴ = 318187317113 is a prime.

It is not an unprimeable number, because it can be changed into a prime (318187317109) 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 11 ways as a sum of consecutive naturals, for example, 438274179 + ... + 438274904.

It is an arithmetic number, because the mean of its divisors is an integer number (38860342724).

Almost surely, 2^318187317129 is an apocalyptic number.

It is an amenable number.

318187317129 is a deficient number, since it is larger than the sum of its proper divisors (148136795559).

318187317129 is a wasteful number, since it uses less digits than its factorization.

318187317129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 876549108 (or 876549097 counting only the distinct ones).

The product of its digits is 508032, while the sum is 51.

The spelling of 318187317129 in words is "three hundred eighteen billion, one hundred eighty-seven million, three hundred seventeen thousand, one hundred twenty-nine".