11231091 has 24 divisors (see below), whose sum is σ = 17250480. Its totient is φ = 7027776.

The previous prime is 11231081. The next prime is 11231093. The reversal of 11231091 is 19013211.

It is not a de Polignac number, because 11231091 - 2⁶ = 11231027 is a prime.

It is a super-2 number, since 2×11231091² = 252274810100562, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11231093) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9076 + ... + 10238.

It is an arithmetic number, because the mean of its divisors is an integer number (718770).

Almost surely, 2^11231091 is an apocalyptic number.

11231091 is a deficient number, since it is larger than the sum of its proper divisors (6019389).

11231091 is a wasteful number, since it uses less digits than its factorization.

11231091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1235 (or 1232 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 18.

The square root of 11231091 is about 3351.2819935064. The cubic root of 11231091 is about 223.9446278418.

The spelling of 11231091 in words is "eleven million, two hundred thirty-one thousand, ninety-one".