2313043440 has 40 divisors (see below), whose sum is σ = 7170435408. Its totient is φ = 616811520.

The previous prime is 2313043429. The next prime is 2313043457. The reversal of 2313043440 is 443403132.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 2313043440.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4818601 + ... + 4819080.

Almost surely, 2^2313043440 is an apocalyptic number.

2313043440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2313043440 is an abundant number, since it is smaller than the sum of its proper divisors (4857391968).

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

2313043440 is a wasteful number, since it uses less digits than its factorization.

2313043440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9637697 (or 9637691 counting only the distinct ones).

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

The square root of 2313043440 is about 48094.1102423155. The cubic root of 2313043440 is about 1322.4966979976.

Adding to 2313043440 its reverse (443403132), we get a palindrome (2756446572).

The spelling of 2313043440 in words is "two billion, three hundred thirteen million, forty-three thousand, four hundred forty".