12132203231 has 4 divisors (see below), whose sum is σ = 12659690352. Its totient is φ = 11604716112.

The previous prime is 12132203227. The next prime is 12132203249. The reversal of 12132203231 is 13230223121.

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

It is a cyclic number.

It is not a de Polignac number, because 12132203231 - 2² = 12132203227 is a prime.

It is a super-2 number, since 2×12132203231² (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 (12132203261) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 263743526 + ... + 263743571.

It is an arithmetic number, because the mean of its divisors is an integer number (3164922588).

Almost surely, 2^12132203231 is an apocalyptic number.

12132203231 is a deficient number, since it is larger than the sum of its proper divisors (527487121).

12132203231 is an equidigital number, since it uses as much as digits as its factorization.

12132203231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 527487120.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 12132203231 its reverse (13230223121), we get a palindrome (25362426352).

The spelling of 12132203231 in words is "twelve billion, one hundred thirty-two million, two hundred three thousand, two hundred thirty-one".