318112140 has 96 divisors (see below), whose sum is σ = 908328960. Its totient is φ = 83172096.

The previous prime is 318112139. The next prime is 318112159. The reversal of 318112140 is 41211813.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 830389 + ... + 830771.

It is an arithmetic number, because the mean of its divisors is an integer number (9461760).

Almost surely, 2^318112140 is an apocalyptic number.

318112140 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 318112140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (454164480).

318112140 is an abundant number, since it is smaller than the sum of its proper divisors (590216820).

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

318112140 is a wasteful number, since it uses less digits than its factorization.

318112140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 631 (or 629 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 21.

The square root of 318112140 is about 17835.6984724456. The cubic root of 318112140 is about 682.6426435070.

Adding to 318112140 its reverse (41211813), we get a palindrome (359323953).

The spelling of 318112140 in words is "three hundred eighteen million, one hundred twelve thousand, one hundred forty".