2531230280 has 16 divisors (see below), whose sum is σ = 5695268220. Its totient is φ = 1012492096.

The previous prime is 2531230277. The next prime is 2531230291. The reversal of 2531230280 is 820321352.

It can be written as a sum of positive squares in 2 ways, for example, as 2300737156 + 230493124 = 47966^2 + 15182^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31640339 + ... + 31640418.

Almost surely, 2^2531230280 is an apocalyptic number.

2531230280 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2531230280 is an abundant number, since it is smaller than the sum of its proper divisors (3164037940).

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

2531230280 is a wasteful number, since it uses less digits than its factorization.

2531230280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63280768 (or 63280764 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 2531230280 is about 50311.3335144279. Note that the first 3 decimals coincide. The cubic root of 2531230280 is about 1362.8369054921.

The spelling of 2531230280 in words is "two billion, five hundred thirty-one million, two hundred thirty thousand, two hundred eighty".