12931133 has 2 divisors, whose sum is σ = 12931134. Its totient is φ = 12931132.

The previous prime is 12931111. The next prime is 12931181. The reversal of 12931133 is 33113921.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6646084 + 6285049 = 2578^2 + 2507^2 .

It is a cyclic number.

It is not a de Polignac number, because 12931133 - 2⁸ = 12930877 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12931099 and 12931108.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12931103) 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, 6465566 + 6465567.

It is an arithmetic number, because the mean of its divisors is an integer number (6465567).

Almost surely, 2^12931133 is an apocalyptic number.

It is an amenable number.

12931133 is a deficient number, since it is larger than the sum of its proper divisors (1).

12931133 is an equidigital number, since it uses as much as digits as its factorization.

12931133 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 486, while the sum is 23.

The square root of 12931133 is about 3595.9884593808. The cubic root of 12931133 is about 234.7175299294.

The spelling of 12931133 in words is "twelve million, nine hundred thirty-one thousand, one hundred thirty-three".