11089531 has 2 divisors, whose sum is σ = 11089532. Its totient is φ = 11089530.

The previous prime is 11089523. The next prime is 11089549. The reversal of 11089531 is 13598011.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11089531 - 2³ = 11089523 is a prime.

It is a super-2 number, since 2×11089531² = 245955395599922, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 11089531.

It is not a weakly prime, because it can be changed into another prime (11089501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5544765 + 5544766.

It is an arithmetic number, because the mean of its divisors is an integer number (5544766).

Almost surely, 2^11089531 is an apocalyptic number.

11089531 is a deficient number, since it is larger than the sum of its proper divisors (1).

11089531 is an equidigital number, since it uses as much as digits as its factorization.

11089531 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1080, while the sum is 28.

The square root of 11089531 is about 3330.0947433970. The cubic root of 11089531 is about 222.9997586919. Note that the first 3 decimals are identical.

The spelling of 11089531 in words is "eleven million, eighty-nine thousand, five hundred thirty-one".