12431099 has 2 divisors, whose sum is σ = 12431100. Its totient is φ = 12431098.

The previous prime is 12431071. The next prime is 12431117. The reversal of 12431099 is 99013421.

It is a happy number.

12431099 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12431099 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (12431399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6215549 + 6215550.

It is an arithmetic number, because the mean of its divisors is an integer number (6215550).

Almost surely, 2^12431099 is an apocalyptic number.

12431099 is a deficient number, since it is larger than the sum of its proper divisors (1).

12431099 is an equidigital number, since it uses as much as digits as its factorization.

12431099 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1944, while the sum is 29.

The square root of 12431099 is about 3525.7763684046. The cubic root of 12431099 is about 231.6522423145.

The spelling of 12431099 in words is "twelve million, four hundred thirty-one thousand, ninety-nine".