11331231020 has 24 divisors (see below), whose sum is σ = 25047985200. Its totient is φ = 4293940032.

The previous prime is 11331230969. The next prime is 11331231059. The reversal of 11331231020 is 2013213311.

11331231020 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×11331231020² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 11331231020.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14909135 + ... + 14909894.

It is an arithmetic number, because the mean of its divisors is an integer number (1043666050).

Almost surely, 2^11331231020 is an apocalyptic number.

11331231020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11331231020 is an abundant number, since it is smaller than the sum of its proper divisors (13716754180).

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

11331231020 is a wasteful number, since it uses less digits than its factorization.

11331231020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29819057 (or 29819055 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 11331231020 its reverse (2013213311), we get a palindrome (13344444331).

The spelling of 11331231020 in words is "eleven billion, three hundred thirty-one million, two hundred thirty-one thousand, twenty".