11231031021320 has 32 divisors (see below), whose sum is σ = 27567076144320. Its totient is φ = 4084011280320.

The previous prime is 11231031021299. The next prime is 11231031021349. The reversal of 11231031021320 is 2312013013211.

It is a happy number.

It is a super-2 number, since 2×11231031021320² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 11231031021292 and 11231031021301.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12762534812 + ... + 12762535691.

It is an arithmetic number, because the mean of its divisors is an integer number (861471129510).

Almost surely, 2^{11231031021320} is an apocalyptic number.

11231031021320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11231031021320 is an abundant number, since it is smaller than the sum of its proper divisors (16336045123000).

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

11231031021320 is a wasteful number, since it uses less digits than its factorization.

11231031021320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25525070525 (or 25525070521 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 11231031021320 its reverse (2312013013211), we get a palindrome (13543044034531).

The spelling of 11231031021320 in words is "eleven trillion, two hundred thirty-one billion, thirty-one million, twenty-one thousand, three hundred twenty".