13143239 has 2 divisors, whose sum is σ = 13143240. Its totient is φ = 13143238.

The previous prime is 13143233. The next prime is 13143241. The reversal of 13143239 is 93234131.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13143239 - 2⁴ = 13143223 is a prime.

It is a super-2 number, since 2×13143239² = 345489462822242, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 13143241, 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 (13143233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6571619 + 6571620.

It is an arithmetic number, because the mean of its divisors is an integer number (6571620).

Almost surely, 2^13143239 is an apocalyptic number.

13143239 is a deficient number, since it is larger than the sum of its proper divisors (1).

13143239 is an equidigital number, since it uses as much as digits as its factorization.

13143239 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1944, while the sum is 26.

The square root of 13143239 is about 3625.3605337952. The cubic root of 13143239 is about 235.9939132300.

The spelling of 13143239 in words is "thirteen million, one hundred forty-three thousand, two hundred thirty-nine".