12929131 has 4 divisors (see below), whose sum is σ = 13050072. Its totient is φ = 12808192.

The previous prime is 12929117. The next prime is 12929141. The reversal of 12929131 is 13192921.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12929131 is a prime.

It is a super-2 number, since 2×12929131² = 334324856830322, which contains 22 as substring.

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 12929131.

It is not an unprimeable number, because it can be changed into a prime (12929141) 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, 60310 + ... + 60523.

It is an arithmetic number, because the mean of its divisors is an integer number (3262518).

Almost surely, 2^12929131 is an apocalyptic number.

12929131 is a deficient number, since it is larger than the sum of its proper divisors (120941).

12929131 is a wasteful number, since it uses less digits than its factorization.

12929131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120940.

The product of its digits is 972, while the sum is 28.

The square root of 12929131 is about 3595.7100828626. The cubic root of 12929131 is about 234.7054163029.

The spelling of 12929131 in words is "twelve million, nine hundred twenty-nine thousand, one hundred thirty-one".