11323031020 has 96 divisors (see below), whose sum is σ = 27906278400. Its totient is φ = 3779046144.

The previous prime is 11323031009. The next prime is 11323031023. The reversal of 11323031020 is 2013032311.

It is a super-2 number, since 2×11323031020² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11323030985 and 11323031003.

It is not an unprimeable number, because it can be changed into a prime (11323031023) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 844126 + ... + 857434.

It is an arithmetic number, because the mean of its divisors is an integer number (290690400).

Almost surely, 2^11323031020 is an apocalyptic number.

11323031020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11323031020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13953139200).

11323031020 is an abundant number, since it is smaller than the sum of its proper divisors (16583247380).

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

11323031020 is a wasteful number, since it uses less digits than its factorization.

11323031020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13487 (or 13485 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 11323031020 its reverse (2013032311), we get a palindrome (13336063331).

The spelling of 11323031020 in words is "eleven billion, three hundred twenty-three million, thirty-one thousand, twenty".