2531546140 has 24 divisors (see below), whose sum is σ = 5317472160. Its totient is φ = 1012385088.

The previous prime is 2531546131. The next prime is 2531546159. The reversal of 2531546140 is 416451352.

It is a happy number.

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, 94126 + ... + 117994.

It is an arithmetic number, because the mean of its divisors is an integer number (221561340).

Almost surely, 2^2531546140 is an apocalyptic number.

2531546140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2531546140 is an abundant number, since it is smaller than the sum of its proper divisors (2785926020).

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

2531546140 is a wasteful number, since it uses less digits than its factorization.

2531546140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29181 (or 29179 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 31.

The square root of 2531546140 is about 50314.4724706520. The cubic root of 2531546140 is about 1362.8935904126.

Adding to 2531546140 its reverse (416451352), we get a palindrome (2947997492).

The spelling of 2531546140 in words is "two billion, five hundred thirty-one million, five hundred forty-six thousand, one hundred forty".