11311210323220 has 24 divisors (see below), whose sum is σ = 23780321357184. Its totient is φ = 4519383238176.

The previous prime is 11311210323173. The next prime is 11311210323221. The reversal of 11311210323220 is 2232301211311.

It is a super-2 number, since 2×11311210323220² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11311210323191 and 11311210323200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11311210323221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 318787512 + ... + 318822991.

It is an arithmetic number, because the mean of its divisors is an integer number (990846723216).

Almost surely, 2^{11311210323220} is an apocalyptic number.

11311210323220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11311210323220 is an abundant number, since it is smaller than the sum of its proper divisors (12469111033964).

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

11311210323220 is a wasteful number, since it uses less digits than its factorization.

11311210323220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 637611399 (or 637611397 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 11311210323220 its reverse (2232301211311), we get a palindrome (13543511534531).

The spelling of 11311210323220 in words is "eleven trillion, three hundred eleven billion, two hundred ten million, three hundred twenty-three thousand, two hundred twenty".