12931429 has 4 divisors (see below), whose sum is σ = 14778784. Its totient is φ = 11084076.

The previous prime is 12931427. The next prime is 12931453. The reversal of 12931429 is 92413921.

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, and also an emirpimes, since its reverse is a distinct semiprime: 92413921 = 17 ⋅5436113.

It is a cyclic number.

It is not a de Polignac number, because 12931429 - 2¹ = 12931427 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12931429.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12931423) 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 in 3 ways as a sum of consecutive naturals, for example, 923667 + ... + 923680.

It is an arithmetic number, because the mean of its divisors is an integer number (3694696).

Almost surely, 2^12931429 is an apocalyptic number.

It is an amenable number.

12931429 is a deficient number, since it is larger than the sum of its proper divisors (1847355).

12931429 is an equidigital number, since it uses as much as digits as its factorization.

12931429 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1847354.

The product of its digits is 3888, while the sum is 31.

The square root of 12931429 is about 3596.0296161183. The cubic root of 12931429 is about 234.7193208490.

The spelling of 12931429 in words is "twelve million, nine hundred thirty-one thousand, four hundred twenty-nine".