111928319 has 4 divisors (see below), whose sum is σ = 114658320. Its totient is φ = 109198320.

The previous prime is 111928279. The next prime is 111928337. The reversal of 111928319 is 913829111.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 111928319 - 2¹⁶ = 111862783 is a prime.

It is a super-2 number, since 2×111928319² = 25055897188331522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111928339) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1364939 + ... + 1365020.

It is an arithmetic number, because the mean of its divisors is an integer number (28664580).

Almost surely, 2^111928319 is an apocalyptic number.

111928319 is a deficient number, since it is larger than the sum of its proper divisors (2730001).

111928319 is an equidigital number, since it uses as much as digits as its factorization.

111928319 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2730000.

The product of its digits is 3888, while the sum is 35.

The square root of 111928319 is about 10579.6180932962. The cubic root of 111928319 is about 481.9255967178.

The spelling of 111928319 in words is "one hundred eleven million, nine hundred twenty-eight thousand, three hundred nineteen".