12543242631 has 8 divisors (see below), whose sum is σ = 17113261440. Its totient is φ = 8167692792.

The previous prime is 12543242567. The next prime is 12543242639. The reversal of 12543242631 is 13624234521.

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

It is not a de Polignac number, because 12543242631 - 2⁶ = 12543242567 is a prime.

It is a super-2 number, since 2×12543242631² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12543242592 and 12543242601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12543242639) 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, 48617091 + ... + 48617348.

It is an arithmetic number, because the mean of its divisors is an integer number (2139157680).

Almost surely, 2^12543242631 is an apocalyptic number.

12543242631 is a deficient number, since it is larger than the sum of its proper divisors (4570018809).

12543242631 is an equidigital number, since it uses as much as digits as its factorization.

12543242631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97234485.

The product of its digits is 34560, while the sum is 33.

The spelling of 12543242631 in words is "twelve billion, five hundred forty-three million, two hundred forty-two thousand, six hundred thirty-one".