11331289 has 2 divisors, whose sum is σ = 11331290. Its totient is φ = 11331288.

The previous prime is 11331269. The next prime is 11331311. The reversal of 11331289 is 98213311.

11331289 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8508889 + 2822400 = 2917^2 + 1680^2 .

It is a cyclic number.

It is not a de Polignac number, because 11331289 - 2¹³ = 11323097 is a prime.

It is a super-2 number, since 2×11331289² = 256796220803042, which contains 22 as substring.

It is a nialpdrome in base 15.

It is not a weakly prime, because it can be changed into another prime (11331209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5665644 + 5665645.

It is an arithmetic number, because the mean of its divisors is an integer number (5665645).

Almost surely, 2^11331289 is an apocalyptic number.

It is an amenable number.

11331289 is a deficient number, since it is larger than the sum of its proper divisors (1).

11331289 is an equidigital number, since it uses as much as digits as its factorization.

11331289 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1296, while the sum is 28.

The square root of 11331289 is about 3366.1980036831. The cubic root of 11331289 is about 224.6086299248.

The spelling of 11331289 in words is "eleven million, three hundred thirty-one thousand, two hundred eighty-nine".