2531680920 has 96 divisors (see below), whose sum is σ = 8532735120. Its totient is φ = 675112320.

The previous prime is 2531680913. The next prime is 2531680967. The reversal of 2531680920 is 290861352.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 120511 + ... + 139950.

Almost surely, 2^2531680920 is an apocalyptic number.

2531680920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2531680920 is an abundant number, since it is smaller than the sum of its proper divisors (6001054200).

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

2531680920 is a wasteful number, since it uses less digits than its factorization.

2531680920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260487 (or 260471 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 2531680920 is about 50315.8118288873. The cubic root of 2531680920 is about 1362.9177768884.

The spelling of 2531680920 in words is "two billion, five hundred thirty-one million, six hundred eighty thousand, nine hundred twenty".