13431429 has 12 divisors (see below), whose sum is σ = 21164832. Its totient is φ = 8140200.

The previous prime is 13431421. The next prime is 13431433. The reversal of 13431429 is 92413431.

13431429 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13431429 - 2³ = 13431421 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13431421) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 67737 + ... + 67934.

It is an arithmetic number, because the mean of its divisors is an integer number (1763736).

Almost surely, 2^13431429 is an apocalyptic number.

It is an amenable number.

13431429 is a deficient number, since it is larger than the sum of its proper divisors (7733403).

13431429 is a wasteful number, since it uses less digits than its factorization.

13431429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135688 (or 135685 counting only the distinct ones).

The product of its digits is 2592, while the sum is 27.

The square root of 13431429 is about 3664.8914035753. The cubic root of 13431429 is about 237.7063263361.

It can be divided in two parts, 1343 and 1429, that added together give a palindrome (2772).

The spelling of 13431429 in words is "thirteen million, four hundred thirty-one thousand, four hundred twenty-nine".