318743138905 has 8 divisors (see below), whose sum is σ = 382497845184. Its totient is φ = 254990458800.

The previous prime is 318743138881. The next prime is 318743138951. The reversal of 318743138905 is 509831347813.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 318743138905 - 2³⁵ = 284383400537 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 135781 + ... + 809890.

It is an arithmetic number, because the mean of its divisors is an integer number (47812230648).

Almost surely, 2^318743138905 is an apocalyptic number.

It is an amenable number.

318743138905 is a deficient number, since it is larger than the sum of its proper divisors (63754706279).

318743138905 is an equidigital number, since it uses as much as digits as its factorization.

318743138905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1013087.

The product of its (nonzero) digits is 2177280, while the sum is 52.

The spelling of 318743138905 in words is "three hundred eighteen billion, seven hundred forty-three million, one hundred thirty-eight thousand, nine hundred five".