11321611 has 4 divisors (see below), whose sum is σ = 12938992. Its totient is φ = 9704232.

The previous prime is 11321591. The next prime is 11321659. The reversal of 11321611 is 11612311.

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 11321611 - 2⁵ = 11321579 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (11321671) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 808680 + ... + 808693.

It is an arithmetic number, because the mean of its divisors is an integer number (3234748).

Almost surely, 2^11321611 is an apocalyptic number.

11321611 is a deficient number, since it is larger than the sum of its proper divisors (1617381).

11321611 is an equidigital number, since it uses as much as digits as its factorization.

11321611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1617380.

The product of its digits is 36, while the sum is 16.

The square root of 11321611 is about 3364.7601697595. The cubic root of 11321611 is about 224.5446659904.

Adding to 11321611 its reverse (11612311), we get a palindrome (22933922).

The spelling of 11321611 in words is "eleven million, three hundred twenty-one thousand, six hundred eleven".