12031301231 has 2 divisors, whose sum is σ = 12031301232. Its totient is φ = 12031301230.

The previous prime is 12031301207. The next prime is 12031301257. The reversal of 12031301231 is 13210313021.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12031301231 is a prime.

It is a super-2 number, since 2×12031301231² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12031307231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6015650615 + 6015650616.

It is an arithmetic number, because the mean of its divisors is an integer number (6015650616).

Almost surely, 2^12031301231 is an apocalyptic number.

12031301231 is a deficient number, since it is larger than the sum of its proper divisors (1).

12031301231 is an equidigital number, since it uses as much as digits as its factorization.

12031301231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 12031301231 its reverse (13210313021), we get a palindrome (25241614252).

The spelling of 12031301231 in words is "twelve billion, thirty-one million, three hundred one thousand, two hundred thirty-one".