12102303231 has 28 divisors (see below), whose sum is σ = 18934100208. Its totient is φ = 7717400064.

The previous prime is 12102303133. The next prime is 12102303263. The reversal of 12102303231 is 13230320121.

It is not a de Polignac number, because 12102303231 - 2¹⁰ = 12102302207 is a prime.

It is a super-2 number, since 2×12102303231² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12102103231) 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 27 ways as a sum of consecutive naturals, for example, 344130 + ... + 377663.

Almost surely, 2^12102303231 is an apocalyptic number.

12102303231 is a deficient number, since it is larger than the sum of its proper divisors (6831796977).

12102303231 is an frugal number, since it uses more digits than its factorization.

12102303231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 721834 (or 721819 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 12102303231 its reverse (13230320121), we get a palindrome (25332623352).

The spelling of 12102303231 in words is "twelve billion, one hundred two million, three hundred three thousand, two hundred thirty-one".