318140032 has 64 divisors (see below), whose sum is σ = 729504000. Its totient is φ = 135373824.

The previous prime is 318140029. The next prime is 318140083. The reversal of 318140032 is 230041813.

It is a tau number, because it is divible by the number of its divisors (64).

It is a super-2 number, since 2×318140032² = 202426159921922048, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 318139985 and 318140012.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 132313 + ... + 134695.

It is an arithmetic number, because the mean of its divisors is an integer number (11398500).

Almost surely, 2^318140032 is an apocalyptic number.

318140032 is a gapful number since it is divisible by the number (32) 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 318140032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (364752000).

318140032 is an abundant number, since it is smaller than the sum of its proper divisors (411363968).

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

318140032 is a wasteful number, since it uses less digits than its factorization.

318140032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2553 (or 2541 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 318140032 is about 17836.4803702973. The cubic root of 318140032 is about 682.6625942411.

Adding to 318140032 its reverse (230041813), we get a palindrome (548181845).

The spelling of 318140032 in words is "three hundred eighteen million, one hundred forty thousand, thirty-two".