12899231 has 2 divisors, whose sum is σ = 12899232. Its totient is φ = 12899230.

The previous prime is 12899221. The next prime is 12899267. The reversal of 12899231 is 13299821.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12899231 - 2⁶ = 12899167 is a prime.

It is a super-2 number, since 2×12899231² = 332780320782722, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 12899191 and 12899200.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12899221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6449615 + 6449616.

It is an arithmetic number, because the mean of its divisors is an integer number (6449616).

Almost surely, 2^12899231 is an apocalyptic number.

12899231 is a deficient number, since it is larger than the sum of its proper divisors (1).

12899231 is an equidigital number, since it uses as much as digits as its factorization.

12899231 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7776, while the sum is 35.

The square root of 12899231 is about 3591.5499439657. The cubic root of 12899231 is about 234.5243495158.

The spelling of 12899231 in words is "twelve million, eight hundred ninety-nine thousand, two hundred thirty-one".