12133202431 has 4 divisors (see below), whose sum is σ = 13866517072. Its totient is φ = 10399887792.

The previous prime is 12133202401. The next prime is 12133202453. The reversal of 12133202431 is 13420233121.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 12133202431 - 2⁹ = 12133201919 is a prime.

It is a super-2 number, since 2×12133202431² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12133202401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 866657310 + ... + 866657323.

It is an arithmetic number, because the mean of its divisors is an integer number (3466629268).

Almost surely, 2^12133202431 is an apocalyptic number.

12133202431 is a deficient number, since it is larger than the sum of its proper divisors (1733314641).

12133202431 is an equidigital number, since it uses as much as digits as its factorization.

12133202431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1733314640.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 12133202431 its reverse (13420233121), we get a palindrome (25553435552).

The spelling of 12133202431 in words is "twelve billion, one hundred thirty-three million, two hundred two thousand, four hundred thirty-one".