13251252531 has 16 divisors (see below), whose sum is σ = 20408347008. Its totient is φ = 7558646400.

The previous prime is 13251252493. The next prime is 13251252577. The reversal of 13251252531 is 13525215231.

It is not a de Polignac number, because 13251252531 - 2¹⁷ = 13251121459 is a prime.

It is a super-2 number, since 2×13251252531² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13251252331) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11809825 + ... + 11810946.

It is an arithmetic number, because the mean of its divisors is an integer number (1275521688).

Almost surely, 2^13251252531 is an apocalyptic number.

13251252531 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

13251252531 is a deficient number, since it is larger than the sum of its proper divisors (7157094477).

13251252531 is a wasteful number, since it uses less digits than its factorization.

13251252531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23620802.

The product of its digits is 9000, while the sum is 30.

Adding to 13251252531 its reverse (13525215231), we get a palindrome (26776467762).

The spelling of 13251252531 in words is "thirteen billion, two hundred fifty-one million, two hundred fifty-two thousand, five hundred thirty-one".