12400004231 has 2 divisors, whose sum is σ = 12400004232. Its totient is φ = 12400004230.

The previous prime is 12400004147. The next prime is 12400004233. The reversal of 12400004231 is 13240000421.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12400004231 - 2²² = 12395809927 is a prime.

It is a super-2 number, since 2×12400004231² (a number of 21 digits) contains 22 as substring.

Together with 12400004233, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12400004233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6200002115 + 6200002116.

It is an arithmetic number, because the mean of its divisors is an integer number (6200002116).

Almost surely, 2^12400004231 is an apocalyptic number.

12400004231 is a deficient number, since it is larger than the sum of its proper divisors (1).

12400004231 is an equidigital number, since it uses as much as digits as its factorization.

12400004231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 12400004231 its reverse (13240000421), we get a palindrome (25640004652).

The spelling of 12400004231 in words is "twelve billion, four hundred million, four thousand, two hundred thirty-one".