2531322340 has 12 divisors (see below), whose sum is σ = 5315776956. Its totient is φ = 1012528928.

The previous prime is 2531322331. The next prime is 2531322341. The reversal of 2531322340 is 432231352.

2531322340 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 1360724544 + 1170597796 = 36888^2 + 34214^2 .

It is not an unprimeable number, because it can be changed into a prime (2531322341) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63283039 + ... + 63283078.

It is an arithmetic number, because the mean of its divisors is an integer number (442981413).

Almost surely, 2^2531322340 is an apocalyptic number.

2531322340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2531322340 is an abundant number, since it is smaller than the sum of its proper divisors (2784454616).

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

2531322340 is a wasteful number, since it uses less digits than its factorization.

2531322340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126566126 (or 126566124 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 25.

The square root of 2531322340 is about 50312.2484093088. The cubic root of 2531322340 is about 1362.8534272662.

Adding to 2531322340 its reverse (432231352), we get a palindrome (2963553692).

The spelling of 2531322340 in words is "two billion, five hundred thirty-one million, three hundred twenty-two thousand, three hundred forty".