2311325640 has 96 divisors (see below), whose sum is σ = 8089656120. Its totient is φ = 568940544.

The previous prime is 2311325633. The next prime is 2311325659. The reversal of 2311325640 is 465231132.

2311325640 is a `hidden beast` number, since 2 + 3 + 1 + 13 + 2 + 5 + 640 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 1821411684 + 489913956 = 42678^2 + 22134^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 242257 + ... + 251616.

Almost surely, 2^2311325640 is an apocalyptic number.

2311325640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2311325640 is an abundant number, since it is smaller than the sum of its proper divisors (5778330480).

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

2311325640 is a wasteful number, since it uses less digits than its factorization.

2311325640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 493903 (or 493896 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 2311325640 is about 48076.2481897246. The cubic root of 2311325640 is about 1322.1692293753.

Adding to 2311325640 its reverse (465231132), we get a palindrome (2776556772).

The spelling of 2311325640 in words is "two billion, three hundred eleven million, three hundred twenty-five thousand, six hundred forty".