12102023231 has 4 divisors (see below), whose sum is σ = 12102455232. Its totient is φ = 12101591232.

The previous prime is 12102023149. The next prime is 12102023237. The reversal of 12102023231 is 13232020121.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12102023231 is a prime.

It is a super-2 number, since 2×12102023231² (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 (12102023237) 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, 170831 + ... + 231056.

It is an arithmetic number, because the mean of its divisors is an integer number (3025613808).

Almost surely, 2^12102023231 is an apocalyptic number.

12102023231 is a deficient number, since it is larger than the sum of its proper divisors (432001).

12102023231 is an equidigital number, since it uses as much as digits as its factorization.

12102023231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 432000.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 12102023231 its reverse (13232020121), we get a palindrome (25334043352).

The spelling of 12102023231 in words is "twelve billion, one hundred two million, twenty-three thousand, two hundred thirty-one".