12320111310 has 128 divisors (see below), whose sum is σ = 33811706880. Its totient is φ = 2846140416.

The previous prime is 12320111303. The next prime is 12320111311. The reversal of 12320111310 is 1311102321.

It is a happy number.

It is a super-2 number, since 2×12320111310² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 12320111310.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12320111311) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2510319 + ... + 2515221.

It is an arithmetic number, because the mean of its divisors is an integer number (264153960).

Almost surely, 2^12320111310 is an apocalyptic number.

12320111310 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 12320111310, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16905853440).

12320111310 is an abundant number, since it is smaller than the sum of its proper divisors (21491595570).

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

12320111310 is a wasteful number, since it uses less digits than its factorization.

12320111310 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5322.

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 12320111310 its reverse (1311102321), we get a palindrome (13631213631).

It can be divided in two parts, 1232011 and 1310, that added together give a palindrome (1233321).

The spelling of 12320111310 in words is "twelve billion, three hundred twenty million, one hundred eleven thousand, three hundred ten".