12400214231 has 2 divisors, whose sum is σ = 12400214232. Its totient is φ = 12400214230.

The previous prime is 12400214201. The next prime is 12400214243. The reversal of 12400214231 is 13241200421.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12400214231 - 2¹⁸ = 12399952087 is a prime.

It is a super-2 number, since 2×12400214231² (a number of 21 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12400214201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6200107115 + 6200107116.

It is an arithmetic number, because the mean of its divisors is an integer number (6200107116).

Almost surely, 2^12400214231 is an apocalyptic number.

12400214231 is a deficient number, since it is larger than the sum of its proper divisors (1).

12400214231 is an equidigital number, since it uses as much as digits as its factorization.

12400214231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 12400214231 its reverse (13241200421), we get a palindrome (25641414652).

The spelling of 12400214231 in words is "twelve billion, four hundred million, two hundred fourteen thousand, two hundred thirty-one".