12534052531 has 48 divisors (see below), whose sum is σ = 17235327424. Its totient is φ = 8867232000.

The previous prime is 12534052511. The next prime is 12534052577. The reversal of 12534052531 is 13525043521.

It is not a de Polignac number, because 12534052531 - 2¹³ = 12534044339 is a prime.

It is a super-2 number, since 2×12534052531² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12534052493 and 12534052502.

It is not an unprimeable number, because it can be changed into a prime (12534052511) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 662341 + ... + 681001.

Almost surely, 2^12534052531 is an apocalyptic number.

12534052531 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12534052531 is a deficient number, since it is larger than the sum of its proper divisors (4701274893).

12534052531 is a wasteful number, since it uses less digits than its factorization.

12534052531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18764 (or 18753 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 31.

The spelling of 12534052531 in words is "twelve billion, five hundred thirty-four million, fifty-two thousand, five hundred thirty-one".