111111312320 has 28 divisors (see below), whose sum is σ = 264583813224. Its totient is φ = 44444524800.

The previous prime is 111111312259. The next prime is 111111312337. The reversal of 111111312320 is 23213111111.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 173611106 + ... + 173611745.

Almost surely, 2^111111312320 is an apocalyptic number.

111111312320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111111312320 is an abundant number, since it is smaller than the sum of its proper divisors (153472500904).

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

111111312320 is an equidigital number, since it uses as much as digits as its factorization.

111111312320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 347222868 (or 347222858 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 17.

Adding to 111111312320 its reverse (23213111111), we get a palindrome (134324423431).

The spelling of 111111312320 in words is "one hundred eleven billion, one hundred eleven million, three hundred twelve thousand, three hundred twenty".