11323423220 has 12 divisors (see below), whose sum is σ = 23779188804. Its totient is φ = 4529369280.

The previous prime is 11323423213. The next prime is 11323423247. The reversal of 11323423220 is 2232432311.

It can be written as a sum of positive squares in 2 ways, for example, as 1905497104 + 9417926116 = 43652^2 + 97046^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 283085561 + ... + 283085600.

It is an arithmetic number, because the mean of its divisors is an integer number (1981599067).

Almost surely, 2^11323423220 is an apocalyptic number.

11323423220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11323423220 is an abundant number, since it is smaller than the sum of its proper divisors (12455765584).

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

11323423220 is a wasteful number, since it uses less digits than its factorization.

11323423220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 566171170 (or 566171168 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 11323423220 its reverse (2232432311), we get a palindrome (13555855531).

Subtracting from 11323423220 its reverse (2232432311), we obtain a palindrome (9090990909).

The spelling of 11323423220 in words is "eleven billion, three hundred twenty-three million, four hundred twenty-three thousand, two hundred twenty".