11323312020 has 72 divisors (see below), whose sum is σ = 35275708104. Its totient is φ = 2937938688.

The previous prime is 11323312003. The next prime is 11323312027. The reversal of 11323312020 is 2021332311.

11323312020 is a `hidden beast` number, since 1 + 132 + 331 + 202 + 0 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 1765512324 + 9557799696 = 42018^2 + 97764^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 11323311984 and 11323312002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11323312027) 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, 843439 + ... + 856758.

Almost surely, 2^11323312020 is an apocalyptic number.

11323312020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11323312020 is an abundant number, since it is smaller than the sum of its proper divisors (23952396084).

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

11323312020 is a wasteful number, since it uses less digits than its factorization.

11323312020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1700249 (or 1700244 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 11323312020 its reverse (2021332311), we get a palindrome (13344644331).

The spelling of 11323312020 in words is "eleven billion, three hundred twenty-three million, three hundred twelve thousand, twenty".