11323240290 has 160 divisors (see below), whose sum is σ = 31266235440. Its totient is φ = 2939328000.

The previous prime is 11323240289. The next prime is 11323240309. The reversal of 11323240290 is 9204232311.

It is a happy number.

11323240290 is a `hidden beast` number, since 1 + 132 + 3 + 240 + 290 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 1856144889 + 9467095401 = 43083^2 + 97299^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 4989276 + ... + 4991544.

Almost surely, 2^11323240290 is an apocalyptic number.

11323240290 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 11323240290, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15633117720).

11323240290 is an abundant number, since it is smaller than the sum of its proper divisors (19942995150).

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

11323240290 is a wasteful number, since it uses less digits than its factorization.

11323240290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2450 (or 2441 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The spelling of 11323240290 in words is "eleven billion, three hundred twenty-three million, two hundred forty thousand, two hundred ninety".