11312589 has 4 divisors (see below), whose sum is σ = 15083456. Its totient is φ = 7541724.

The previous prime is 11312557. The next prime is 11312603. The reversal of 11312589 is 98521311.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 11312589 - 2⁵ = 11312557 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11312519) 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, 1885429 + ... + 1885434.

It is an arithmetic number, because the mean of its divisors is an integer number (3770864).

Almost surely, 2^11312589 is an apocalyptic number.

It is an amenable number.

11312589 is a deficient number, since it is larger than the sum of its proper divisors (3770867).

11312589 is an equidigital number, since it uses as much as digits as its factorization.

11312589 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3770866.

The product of its digits is 2160, while the sum is 30.

The square root of 11312589 is about 3363.4192423782. The cubic root of 11312589 is about 224.4850048599.

The spelling of 11312589 in words is "eleven million, three hundred twelve thousand, five hundred eighty-nine".