13281091 has 2 divisors, whose sum is σ = 13281092. Its totient is φ = 13281090.

The previous prime is 13281071. The next prime is 13281157. The reversal of 13281091 is 19018231.

13281091 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 a de Polignac number, because none of the positive numbers 2^k-13281091 is a prime.

It is a nialpdrome in base 16.

It is not a weakly prime, because it can be changed into another prime (13281001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6640545 + 6640546.

It is an arithmetic number, because the mean of its divisors is an integer number (6640546).

Almost surely, 2^13281091 is an apocalyptic number.

13281091 is a deficient number, since it is larger than the sum of its proper divisors (1).

13281091 is an equidigital number, since it uses as much as digits as its factorization.

13281091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 25.

The square root of 13281091 is about 3644.3231195930. The cubic root of 13281091 is about 236.8161142533.

The spelling of 13281091 in words is "thirteen million, two hundred eighty-one thousand, ninety-one".