2331440340 has 48 divisors (see below), whose sum is σ = 6542394432. Its totient is φ = 620349696.

The previous prime is 2331440317. The next prime is 2331440387. The reversal of 2331440340 is 430441332.

It is a super-2 number, since 2×2331440340² = 10871228117958631200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2331440340.

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, 15094 + ... + 69933.

It is an arithmetic number, because the mean of its divisors is an integer number (136299884).

Almost surely, 2^2331440340 is an apocalyptic number.

2331440340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2331440340 is an abundant number, since it is smaller than the sum of its proper divisors (4210954092).

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

2331440340 is a wasteful number, since it uses less digits than its factorization.

2331440340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85496 (or 85494 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 24.

The square root of 2331440340 is about 48284.9908356624. The cubic root of 2331440340 is about 1325.9936232685.

Adding to 2331440340 its reverse (430441332), we get a palindrome (2761881672).

The spelling of 2331440340 in words is "two billion, three hundred thirty-one million, four hundred forty thousand, three hundred forty".