2312532640 has 96 divisors (see below), whose sum is σ = 6009837120. Its totient is φ = 840843520.

The previous prime is 2312532613. The next prime is 2312532643. The reversal of 2312532640 is 462352132.

It is a super-2 number, since 2×2312532640² = 10695614422130739200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2312532599 and 2312532608.

It is not an unprimeable number, because it can be changed into a prime (2312532643) 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, 207531 + ... + 218389.

It is an arithmetic number, because the mean of its divisors is an integer number (62602470).

Almost surely, 2^2312532640 is an apocalyptic number.

2312532640 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 2312532640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3004918560).

2312532640 is an abundant number, since it is smaller than the sum of its proper divisors (3697304480).

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

2312532640 is a wasteful number, since it uses less digits than its factorization.

2312532640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10907 (or 10877 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 28.

The square root of 2312532640 is about 48088.7995275407. The cubic root of 2312532640 is about 1322.3993398252.

Adding to 2312532640 its reverse (462352132), we get a palindrome (2774884772).

The spelling of 2312532640 in words is "two billion, three hundred twelve million, five hundred thirty-two thousand, six hundred forty".