2312313140 has 48 divisors (see below), whose sum is σ = 5152859712. Its totient is φ = 868594176.

The previous prime is 2312313131. The next prime is 2312313169. The reversal of 2312313140 is 413132132.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 151499 + ... + 166061.

It is an arithmetic number, because the mean of its divisors is an integer number (107351244).

Almost surely, 2^2312313140 is an apocalyptic number.

2312313140 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 2312313140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2576429856).

2312313140 is an abundant number, since it is smaller than the sum of its proper divisors (2840546572).

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

2312313140 is a wasteful number, since it uses less digits than its factorization.

2312313140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15056 (or 15054 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 2312313140 is about 48086.5172371633. The cubic root of 2312313140 is about 1322.3574988533.

Adding to 2312313140 its reverse (413132132), we get a palindrome (2725445272).

It can be divided in two parts, 23123 and 13140, that added together give a palindrome (36263).

The spelling of 2312313140 in words is "two billion, three hundred twelve million, three hundred thirteen thousand, one hundred forty".