11231089 has 4 divisors (see below), whose sum is σ = 11505060. Its totient is φ = 10957120.

The previous prime is 11231081. The next prime is 11231093. The reversal of 11231089 is 98013211.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6426225 + 4804864 = 2535^2 + 2192^2 .

It is a cyclic number.

It is not a de Polignac number, because 11231089 - 2³ = 11231081 is a prime.

It is a super-2 number, since 2×11231089² = 252274720251842, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11231081) 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, 136924 + ... + 137005.

It is an arithmetic number, because the mean of its divisors is an integer number (2876265).

Almost surely, 2^11231089 is an apocalyptic number.

It is an amenable number.

11231089 is a deficient number, since it is larger than the sum of its proper divisors (273971).

11231089 is an equidigital number, since it uses as much as digits as its factorization.

11231089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 273970.

The product of its (nonzero) digits is 432, while the sum is 25.

The square root of 11231089 is about 3351.2816951131. The cubic root of 11231089 is about 223.9446145486.

The spelling of 11231089 in words is "eleven million, two hundred thirty-one thousand, eighty-nine".