13311091 has 4 divisors (see below), whose sum is σ = 13509832. Its totient is φ = 13112352.

The previous prime is 13311073. The next prime is 13311097. The reversal of 13311091 is 19011331.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 13311091 - 2¹³ = 13302899 is a prime.

It is a super-3 number, since 3×13311091³ (a number of 22 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13311097) 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 in 3 ways as a sum of consecutive naturals, for example, 99270 + ... + 99403.

It is an arithmetic number, because the mean of its divisors is an integer number (3377458).

Almost surely, 2^13311091 is an apocalyptic number.

13311091 is a deficient number, since it is larger than the sum of its proper divisors (198741).

13311091 is an equidigital number, since it uses as much as digits as its factorization.

13311091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198740.

The product of its (nonzero) digits is 81, while the sum is 19.

The square root of 13311091 is about 3648.4367885438. The cubic root of 13311091 is about 236.9942909008.

The spelling of 13311091 in words is "thirteen million, three hundred eleven thousand, ninety-one".