2531123503 has 8 divisors (see below), whose sum is σ = 2543559408. Its totient is φ = 2518701504.

The previous prime is 2531123459. The next prime is 2531123519. The reversal of 2531123503 is 3053211352.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2531123503 - 2⁹ = 2531122991 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2531123563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 628725 + ... + 632737.

It is an arithmetic number, because the mean of its divisors is an integer number (317944926).

Almost surely, 2^2531123503 is an apocalyptic number.

2531123503 is a deficient number, since it is larger than the sum of its proper divisors (12435905).

2531123503 is a wasteful number, since it uses less digits than its factorization.

2531123503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6953.

The product of its (nonzero) digits is 2700, while the sum is 25.

The square root of 2531123503 is about 50310.2723407457. The cubic root of 2531123503 is about 1362.8177419937.

Adding to 2531123503 its reverse (3053211352), we get a palindrome (5584334855).

The spelling of 2531123503 in words is "two billion, five hundred thirty-one million, one hundred twenty-three thousand, five hundred three".