12928031 has 2 divisors, whose sum is σ = 12928032. Its totient is φ = 12928030.

The previous prime is 12928009. The next prime is 12928033. The reversal of 12928031 is 13082921.

It is a strong prime.

It is an emirp because it is prime and its reverse (13082921) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12928031 is a prime.

It is a super-2 number, since 2×12928031² = 334267971073922, which contains 22 as substring.

Together with 12928033, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12928033) 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 as a sum of consecutive naturals, namely, 6464015 + 6464016.

It is an arithmetic number, because the mean of its divisors is an integer number (6464016).

Almost surely, 2^12928031 is an apocalyptic number.

12928031 is a deficient number, since it is larger than the sum of its proper divisors (1).

12928031 is an equidigital number, since it uses as much as digits as its factorization.

12928031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 26.

The square root of 12928031 is about 3595.5571195574. The cubic root of 12928031 is about 234.6987599318.

The spelling of 12928031 in words is "twelve million, nine hundred twenty-eight thousand, thirty-one".