12000003231 has 16 divisors (see below), whose sum is σ = 16945887744. Its totient is φ = 7527321984.

The previous prime is 12000003229. The next prime is 12000003263. The reversal of 12000003231 is 13230000021.

It is a happy number.

It is not a de Polignac number, because 12000003231 - 2¹ = 12000003229 is a prime.

It is a super-2 number, since 2×12000003231² (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 (12000003221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 164200 + ... + 225746.

It is an arithmetic number, because the mean of its divisors is an integer number (1059117984).

Almost surely, 2^12000003231 is an apocalyptic number.

12000003231 is a deficient number, since it is larger than the sum of its proper divisors (4945884513).

12000003231 is a wasteful number, since it uses less digits than its factorization.

12000003231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65390.

The product of its (nonzero) digits is 36, while the sum is 12.

Adding to 12000003231 its reverse (13230000021), we get a palindrome (25230003252).

The spelling of 12000003231 in words is "twelve billion, three thousand, two hundred thirty-one".