13232581 has 2 divisors, whose sum is σ = 13232582. Its totient is φ = 13232580.

The previous prime is 13232573. The next prime is 13232603. The reversal of 13232581 is 18523231.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11115556 + 2117025 = 3334^2 + 1455^2 .

It is an emirp because it is prime and its reverse (18523231) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13232581 - 2³ = 13232573 is a prime.

It is a super-2 number, since 2×13232581² = 350202399843122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13232501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6616290 + 6616291.

It is an arithmetic number, because the mean of its divisors is an integer number (6616291).

Almost surely, 2^13232581 is an apocalyptic number.

It is an amenable number.

13232581 is a deficient number, since it is larger than the sum of its proper divisors (1).

13232581 is an equidigital number, since it uses as much as digits as its factorization.

13232581 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1440, while the sum is 25.

The square root of 13232581 is about 3637.6614740792. The cubic root of 13232581 is about 236.5274340295.

The spelling of 13232581 in words is "thirteen million, two hundred thirty-two thousand, five hundred eighty-one".