2131318360 has 64 divisors (see below), whose sum is σ = 4887280800. Its totient is φ = 836269056.

The previous prime is 2131318351. The next prime is 2131318361. The reversal of 2131318360 is 638131312.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2131318361) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1785924 + ... + 1787116.

Almost surely, 2^2131318360 is an apocalyptic number.

2131318360 is a gapful number since it is divisible by the number (20) 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 2131318360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2443640400).

2131318360 is an abundant number, since it is smaller than the sum of its proper divisors (2755962440).

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

2131318360 is a wasteful number, since it uses less digits than its factorization.

2131318360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2020 (or 2016 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 2131318360 is about 46166.2036559213. The cubic root of 2131318360 is about 1286.9137527689.

Adding to 2131318360 its reverse (638131312), we get a palindrome (2769449672).

The spelling of 2131318360 in words is "two billion, one hundred thirty-one million, three hundred eighteen thousand, three hundred sixty".