111808342319 has 4 divisors (see below), whose sum is σ = 112624461744. Its totient is φ = 110992222896.

The previous prime is 111808342259. The next prime is 111808342357. The reversal of 111808342319 is 913243808111.

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 111808342319 - 2³⁶ = 43088865583 is a prime.

It is a super-2 number, since 2×111808342319² (a number of 23 digits) 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 (111808342819) 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, 408059507 + ... + 408059780.

It is an arithmetic number, because the mean of its divisors is an integer number (28156115436).

Almost surely, 2^111808342319 is an apocalyptic number.

111808342319 is a deficient number, since it is larger than the sum of its proper divisors (816119425).

111808342319 is an equidigital number, since it uses as much as digits as its factorization.

111808342319 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 816119424.

The product of its (nonzero) digits is 41472, while the sum is 41.

The spelling of 111808342319 in words is "one hundred eleven billion, eight hundred eight million, three hundred forty-two thousand, three hundred nineteen".