112991423 has 8 divisors (see below), whose sum is σ = 119606400. Its totient is φ = 106443288.

The previous prime is 112991419. The next prime is 112991467. The reversal of 112991423 is 324199211.

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 112991423 - 2² = 112991419 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 112991423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (112991623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13211 + ... + 20012.

It is an arithmetic number, because the mean of its divisors is an integer number (14950800).

Almost surely, 2^112991423 is an apocalyptic number.

112991423 is a deficient number, since it is larger than the sum of its proper divisors (6614977).

112991423 is a wasteful number, since it uses less digits than its factorization.

112991423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33421.

The product of its digits is 3888, while the sum is 32.

The square root of 112991423 is about 10629.7423769346. The cubic root of 112991423 is about 483.4465804659.

The spelling of 112991423 in words is "one hundred twelve million, nine hundred ninety-one thousand, four hundred twenty-three".