12929431 has 2 divisors, whose sum is σ = 12929432. Its totient is φ = 12929430.

The previous prime is 12929429. The next prime is 12929453. The reversal of 12929431 is 13492921.

12929431 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12929431 - 2¹ = 12929429 is a prime.

It is a super-2 number, since 2×12929431² = 334340371967522, which contains 22 as substring.

Together with 12929429, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 12929393 and 12929402.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12929531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6464715 + 6464716.

It is an arithmetic number, because the mean of its divisors is an integer number (6464716).

Almost surely, 2^12929431 is an apocalyptic number.

12929431 is a deficient number, since it is larger than the sum of its proper divisors (1).

12929431 is an equidigital number, since it uses as much as digits as its factorization.

12929431 is an evil number, because the sum of its binary digits is even.

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

The square root of 12929431 is about 3595.7517989984. The cubic root of 12929431 is about 234.7072316113.

The spelling of 12929431 in words is "twelve million, nine hundred twenty-nine thousand, four hundred thirty-one".