111279623 has 8 divisors (see below), whose sum is σ = 136959648. Its totient is φ = 88045344.

The previous prime is 111279613. The next prime is 111279629. The reversal of 111279623 is 326972111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 111279623 - 2²⁶ = 44170759 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 111279623.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111279629) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 611336 + ... + 611517.

It is an arithmetic number, because the mean of its divisors is an integer number (17119956).

Almost surely, 2^111279623 is an apocalyptic number.

111279623 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

111279623 is a deficient number, since it is larger than the sum of its proper divisors (25680025).

111279623 is a wasteful number, since it uses less digits than its factorization.

111279623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1222873.

The product of its digits is 4536, while the sum is 32.

The square root of 111279623 is about 10548.9157262725. The cubic root of 111279623 is about 480.9927702084.

The spelling of 111279623 in words is "one hundred eleven million, two hundred seventy-nine thousand, six hundred twenty-three".