11233509 has 16 divisors (see below), whose sum is σ = 17442432. Its totient is φ = 6297408.

The previous prime is 11233487. The next prime is 11233511. The reversal of 11233509 is 90533211.

It is a happy number.

It is not a de Polignac number, because 11233509 - 2⁵ = 11233477 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11233109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3934 + ... + 6159.

It is an arithmetic number, because the mean of its divisors is an integer number (1090152).

Almost surely, 2^11233509 is an apocalyptic number.

It is an amenable number.

11233509 is a deficient number, since it is larger than the sum of its proper divisors (6208923).

11233509 is a wasteful number, since it uses less digits than its factorization.

11233509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10156.

The product of its (nonzero) digits is 810, while the sum is 24.

The square root of 11233509 is about 3351.6427315572. The cubic root of 11233509 is about 223.9606980898.

The spelling of 11233509 in words is "eleven million, two hundred thirty-three thousand, five hundred nine".