2540431312 has 20 divisors (see below), whose sum is σ = 5211620676. Its totient is φ = 1195496960.

The previous prime is 2540431303. The next prime is 2540431319. The reversal of 2540431312 is 2131340452.

It can be written as a sum of positive squares in 2 ways, for example, as 1429142416 + 1111288896 = 37804^2 + 33336^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2540431319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4669639 + ... + 4670182.

Almost surely, 2^2540431312 is an apocalyptic number.

It is an amenable number.

2540431312 is an abundant number, since it is smaller than the sum of its proper divisors (2671189364).

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

2540431312 is a wasteful number, since it uses less digits than its factorization.

2540431312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9339846 (or 9339840 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 2540431312 is about 50402.6915154340. The cubic root of 2540431312 is about 1364.4862145216.

Adding to 2540431312 its reverse (2131340452), we get a palindrome (4671771764).

The spelling of 2540431312 in words is "two billion, five hundred forty million, four hundred thirty-one thousand, three hundred twelve".