11644331 has 2 divisors, whose sum is σ = 11644332. Its totient is φ = 11644330.

The previous prime is 11644309. The next prime is 11644343. The reversal of 11644331 is 13344611.

11644331 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11644331 - 2⁶ = 11644267 is a prime.

It is a super-2 number, since 2×11644331² = 271180888875122, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is equal to p₇₆₆₂₀₂ and since 11644331 and 766202 have the same sum of digits, it is a Honaker prime.

It is a junction number, because it is equal to n+sod(n) for n = 11644297 and 11644306.

It is not a weakly prime, because it can be changed into another prime (11644301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5822165 + 5822166.

It is an arithmetic number, because the mean of its divisors is an integer number (5822166).

Almost surely, 2^11644331 is an apocalyptic number.

11644331 is a deficient number, since it is larger than the sum of its proper divisors (1).

11644331 is an equidigital number, since it uses as much as digits as its factorization.

11644331 is an evil number, because the sum of its binary digits is even.

The product of its digits is 864, while the sum is 23.

The square root of 11644331 is about 3412.3790821068. The cubic root of 11644331 is about 226.6582409882.

Adding to 11644331 its reverse (13344611), we get a palindrome (24988942).

The spelling of 11644331 in words is "eleven million, six hundred forty-four thousand, three hundred thirty-one".