11312661 has 8 divisors (see below), whose sum is σ = 15111360. Its totient is φ = 7527872.

The previous prime is 11312641. The next prime is 11312663. The reversal of 11312661 is 16621311.

11312661 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11312661 - 2⁵ = 11312629 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11312663) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1401 + ... + 4958.

It is an arithmetic number, because the mean of its divisors is an integer number (1888920).

Almost surely, 2^11312661 is an apocalyptic number.

It is an amenable number.

11312661 is a deficient number, since it is larger than the sum of its proper divisors (3798699).

11312661 is an equidigital number, since it uses as much as digits as its factorization.

11312661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6955.

The product of its digits is 216, while the sum is 21.

The square root of 11312661 is about 3363.4299457548. The cubic root of 11312661 is about 224.4854811106.

Adding to 11312661 its reverse (16621311), we get a palindrome (27933972).

The spelling of 11312661 in words is "eleven million, three hundred twelve thousand, six hundred sixty-one".