111430091 has 8 divisors (see below), whose sum is σ = 114813504. Its totient is φ = 108088960.

The previous prime is 111430069. The next prime is 111430129. The reversal of 111430091 is 190034111.

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-111430091 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111430021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5180 + ... + 15801.

It is an arithmetic number, because the mean of its divisors is an integer number (14351688).

Almost surely, 2^111430091 is an apocalyptic number.

111430091 is a deficient number, since it is larger than the sum of its proper divisors (3383413).

111430091 is a wasteful number, since it uses less digits than its factorization.

111430091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21141.

The product of its (nonzero) digits is 108, while the sum is 20.

The square root of 111430091 is about 10556.0452348406. The cubic root of 111430091 is about 481.2094658389.

The spelling of 111430091 in words is "one hundred eleven million, four hundred thirty thousand, ninety-one".