2043312540 has 48 divisors (see below), whose sum is σ = 5730281088. Its totient is φ = 544025664.

The previous prime is 2043312533. The next prime is 2043312563. The reversal of 2043312540 is 452133402.

It is a super-2 number, since 2×2043312540² = 8350252272242503200, 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 2043312540.

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, 12099 + ... + 65061.

It is an arithmetic number, because the mean of its divisors is an integer number (119380856).

Almost surely, 2^2043312540 is an apocalyptic number.

2043312540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2043312540 is an abundant number, since it is smaller than the sum of its proper divisors (3686968548).

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

2043312540 is a wasteful number, since it uses less digits than its factorization.

2043312540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53618 (or 53616 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 24.

The square root of 2043312540 is about 45203.0147224718. The cubic root of 2043312540 is about 1268.9512370099.

Adding to 2043312540 its reverse (452133402), we get a palindrome (2495445942).

The spelling of 2043312540 in words is "two billion, forty-three million, three hundred twelve thousand, five hundred forty".