2531516323 has 4 divisors (see below), whose sum is σ = 2893161520. Its totient is φ = 2169871128.

The previous prime is 2531516279. The next prime is 2531516347. The reversal of 2531516323 is 3236151352.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2531516323 - 2¹⁷ = 2531385251 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2531516353) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 180822588 + ... + 180822601.

It is an arithmetic number, because the mean of its divisors is an integer number (723290380).

Almost surely, 2^2531516323 is an apocalyptic number.

2531516323 is a deficient number, since it is larger than the sum of its proper divisors (361645197).

2531516323 is an equidigital number, since it uses as much as digits as its factorization.

2531516323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 361645196.

The product of its digits is 16200, while the sum is 31.

The square root of 2531516323 is about 50314.1761633836. The cubic root of 2531516323 is about 1362.8882395906. Note that the first 3 decimals are identical.

Adding to 2531516323 its reverse (3236151352), we get a palindrome (5767667675).

The spelling of 2531516323 in words is "two billion, five hundred thirty-one million, five hundred sixteen thousand, three hundred twenty-three".