11011331 has 2 divisors, whose sum is σ = 11011332. Its totient is φ = 11011330.

The previous prime is 11011321. The next prime is 11011337. The reversal of 11011331 is 13311011.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11011331 is a prime.

It is a super-3 number, since 3×11011331³ (a number of 22 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (11011337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5505665 + 5505666.

It is an arithmetic number, because the mean of its divisors is an integer number (5505666).

Almost surely, 2^11011331 is an apocalyptic number.

11011331 is a deficient number, since it is larger than the sum of its proper divisors (1).

11011331 is an equidigital number, since it uses as much as digits as its factorization.

11011331 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9, while the sum is 11.

The square root of 11011331 is about 3318.3325632010. The cubic root of 11011331 is about 222.4743462406.

Adding to 11011331 its reverse (13311011), we get a palindrome (24322342).

The spelling of 11011331 in words is "eleven million, eleven thousand, three hundred thirty-one".