12373531243 has 6 divisors (see below), whose sum is σ = 13144201316. Its totient is φ = 11645676192.

The previous prime is 12373531207. The next prime is 12373531259. The reversal of 12373531243 is 34213537321.

It is not a de Polignac number, because 12373531243 - 2²⁵ = 12339976811 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12373531199 and 12373531208.

It is not an unprimeable number, because it can be changed into a prime (12373531043) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 21407205 + ... + 21407782.

Almost surely, 2^12373531243 is an apocalyptic number.

12373531243 is a deficient number, since it is larger than the sum of its proper divisors (770670073).

12373531243 is an equidigital number, since it uses as much as digits as its factorization.

12373531243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42815021 (or 42815004 counting only the distinct ones).

The product of its digits is 45360, while the sum is 34.

The spelling of 12373531243 in words is "twelve billion, three hundred seventy-three million, five hundred thirty-one thousand, two hundred forty-three".