11331090 has 48 divisors (see below), whose sum is σ = 30558528. Its totient is φ = 3020976.

The previous prime is 11331071. The next prime is 11331091. The reversal of 11331090 is 9013311.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (11331091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 99 + ... + 4761.

It is an arithmetic number, because the mean of its divisors is an integer number (636636).

Almost surely, 2^11331090 is an apocalyptic number.

11331090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 11331090, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15279264).

11331090 is an abundant number, since it is smaller than the sum of its proper divisors (19227438).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11331090 is an equidigital number, since it uses as much as digits as its factorization.

11331090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4685 (or 4673 counting only the distinct ones).

The product of its (nonzero) digits is 81, while the sum is 18.

The square root of 11331090 is about 3366.1684449831. The cubic root of 11331090 is about 224.6073150589.

The spelling of 11331090 in words is "eleven million, three hundred thirty-one thousand, ninety".