2130312540 has 24 divisors (see below), whose sum is σ = 5964875280. Its totient is φ = 568083328.

The previous prime is 2130312539. The next prime is 2130312557. The reversal of 2130312540 is 452130312.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17752545 + ... + 17752664.

It is an arithmetic number, because the mean of its divisors is an integer number (248536470).

Almost surely, 2^2130312540 is an apocalyptic number.

2130312540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2130312540 is an abundant number, since it is smaller than the sum of its proper divisors (3834562740).

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

2130312540 is a wasteful number, since it uses less digits than its factorization.

2130312540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35505221 (or 35505219 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 2130312540 is about 46155.3089037437. The cubic root of 2130312540 is about 1286.7112791437.

Adding to 2130312540 its reverse (452130312), we get a palindrome (2582442852).

The spelling of 2130312540 in words is "two billion, one hundred thirty million, three hundred twelve thousand, five hundred forty".