318190143208 has 80 divisors (see below), whose sum is σ = 718452466560. Its totient is φ = 131968015200.

The previous prime is 318190143203. The next prime is 318190143211. The reversal of 318190143208 is 802341091813.

It is not an unprimeable number, because it can be changed into a prime (318190143203) 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 19 ways as a sum of consecutive naturals, for example, 328263 + ... + 862633.

It is an arithmetic number, because the mean of its divisors is an integer number (8980655832).

Almost surely, 2^318190143208 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 318190143208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (359226233280).

318190143208 is an abundant number, since it is smaller than the sum of its proper divisors (400262323352).

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

318190143208 is an equidigital number, since it uses as much as digits as its factorization.

318190143208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 534436 (or 534411 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 40.

The spelling of 318190143208 in words is "three hundred eighteen billion, one hundred ninety million, one hundred forty-three thousand, two hundred eight".