111608319 has 4 divisors (see below), whose sum is σ = 148811096. Its totient is φ = 74405544.

The previous prime is 111608303. The next prime is 111608323. The reversal of 111608319 is 913806111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 913806111 = 3 ⋅304602037.

It is not a de Polignac number, because 111608319 - 2⁴ = 111608303 is a prime.

It is a super-2 number, since 2×111608319² = 24912833740011522, 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 (111608359) 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, 18601384 + ... + 18601389.

It is an arithmetic number, because the mean of its divisors is an integer number (37202774).

Almost surely, 2^111608319 is an apocalyptic number.

111608319 is a deficient number, since it is larger than the sum of its proper divisors (37202777).

111608319 is an equidigital number, since it uses as much as digits as its factorization.

111608319 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37202776.

The product of its (nonzero) digits is 1296, while the sum is 30.

The square root of 111608319 is about 10564.4838491996. The cubic root of 111608319 is about 481.4658876444.

The spelling of 111608319 in words is "one hundred eleven million, six hundred eight thousand, three hundred nineteen".