111331310320 has 80 divisors (see below), whose sum is σ = 265897668960. Its totient is φ = 43327291392.

The previous prime is 111331310309. The next prime is 111331310341. The reversal of 111331310320 is 23013133111.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 821116 + ... + 947044.

It is an arithmetic number, because the mean of its divisors is an integer number (3323720862).

Almost surely, 2^111331310320 is an apocalyptic number.

111331310320 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 111331310320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (132948834480).

111331310320 is an abundant number, since it is smaller than the sum of its proper divisors (154566358640).

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

111331310320 is a wasteful number, since it uses less digits than its factorization.

111331310320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126242 (or 126236 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 19.

Adding to 111331310320 its reverse (23013133111), we get a palindrome (134344443431).

The spelling of 111331310320 in words is "one hundred eleven billion, three hundred thirty-one million, three hundred ten thousand, three hundred twenty".