12543000531 has 8 divisors (see below), whose sum is σ = 16725111744. Its totient is φ = 8361444840.

The previous prime is 12543000529. The next prime is 12543000559. The reversal of 12543000531 is 13500034521.

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

It is not a de Polignac number, because 12543000531 - 2¹ = 12543000529 is a prime.

It is a super-2 number, since 2×12543000531² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12543000581) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 82981 + ... + 178806.

It is an arithmetic number, because the mean of its divisors is an integer number (2090638968).

Almost surely, 2^12543000531 is an apocalyptic number.

12543000531 is a deficient number, since it is larger than the sum of its proper divisors (4182111213).

12543000531 is a wasteful number, since it uses less digits than its factorization.

12543000531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 277761.

The product of its (nonzero) digits is 1800, while the sum is 24.

The spelling of 12543000531 in words is "twelve billion, five hundred forty-three million, five hundred thirty-one", and thus it is an aban number.