111387673 has 4 divisors (see below), whose sum is σ = 113978128. Its totient is φ = 108797220.

The previous prime is 111387667. The next prime is 111387677. The reversal of 111387673 is 376783111.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 111387673 - 2⁹ = 111387161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111387677) 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, 1295163 + ... + 1295248.

It is an arithmetic number, because the mean of its divisors is an integer number (28494532).

Almost surely, 2^111387673 is an apocalyptic number.

It is an amenable number.

111387673 is a deficient number, since it is larger than the sum of its proper divisors (2590455).

111387673 is an equidigital number, since it uses as much as digits as its factorization.

111387673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2590454.

The product of its digits is 21168, while the sum is 37.

The square root of 111387673 is about 10554.0358631189. The cubic root of 111387673 is about 481.1483975536.

It can be divided in two parts, 11 and 1387673, that added together give a square (1387684 = 1178²).

The spelling of 111387673 in words is "one hundred eleven million, three hundred eighty-seven thousand, six hundred seventy-three".