111321389 has 8 divisors (see below), whose sum is σ = 117961920. Its totient is φ = 104691136.

The previous prime is 111321383. The next prime is 111321391. The reversal of 111321389 is 983123111.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111321389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111321383) 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, 40472 + ... + 43134.

It is an arithmetic number, because the mean of its divisors is an integer number (14745240).

Almost surely, 2^111321389 is an apocalyptic number.

It is an amenable number.

111321389 is a deficient number, since it is larger than the sum of its proper divisors (6640531).

111321389 is a wasteful number, since it uses less digits than its factorization.

111321389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5139.

The product of its digits is 1296, while the sum is 29.

The square root of 111321389 is about 10550.8951752920. The cubic root of 111321389 is about 481.0529388500.

It can be divided in two parts, 11132 and 1389, that added together give a palindrome (12521).

The spelling of 111321389 in words is "one hundred eleven million, three hundred twenty-one thousand, three hundred eighty-nine".