13431129 has 4 divisors (see below), whose sum is σ = 17908176. Its totient is φ = 8954084.

The previous prime is 13431127. The next prime is 13431133. The reversal of 13431129 is 92113431.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 13431129 - 2¹ = 13431127 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13431099 and 13431108.

It is not an unprimeable number, because it can be changed into a prime (13431127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2238519 + ... + 2238524.

It is an arithmetic number, because the mean of its divisors is an integer number (4477044).

Almost surely, 2^13431129 is an apocalyptic number.

It is an amenable number.

13431129 is a deficient number, since it is larger than the sum of its proper divisors (4477047).

13431129 is an equidigital number, since it uses as much as digits as its factorization.

13431129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4477046.

The product of its digits is 648, while the sum is 24.

The square root of 13431129 is about 3664.8504744396. The cubic root of 13431129 is about 237.7045565461.

The spelling of 13431129 in words is "thirteen million, four hundred thirty-one thousand, one hundred twenty-nine".