12139542223431 has 8 divisors (see below), whose sum is σ = 18498350054784. Its totient is φ = 6936881270520.

The previous prime is 12139542223397. The next prime is 12139542223441. The reversal of 12139542223431 is 13432224593121.

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

It is not a de Polignac number, because 12139542223431 - 2¹⁰ = 12139542222407 is a prime.

It is a super-2 number, since 2×12139542223431² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12139542223441) 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, 289036719585 + ... + 289036719626.

It is an arithmetic number, because the mean of its divisors is an integer number (2312293756848).

Almost surely, 2^{12139542223431} is an apocalyptic number.

12139542223431 is a deficient number, since it is larger than the sum of its proper divisors (6358807831353).

12139542223431 is an equidigital number, since it uses as much as digits as its factorization.

12139542223431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 578073439221.

The product of its digits is 311040, while the sum is 42.

The spelling of 12139542223431 in words is "twelve trillion, one hundred thirty-nine billion, five hundred forty-two million, two hundred twenty-three thousand, four hundred thirty-one".