111330989 has 12 divisors (see below), whose sum is σ = 141281568. Its totient is φ = 86751000.

The previous prime is 111330959. The next prime is 111330991. The reversal of 111330989 is 989033111.

It is not a de Polignac number, because 111330989 - 2²⁰ = 110282413 is a prime.

It is a super-2 number, since 2×111330989² = 24789178223436242, which contains 22 as substring.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111330929) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 102737 + ... + 103814.

It is an arithmetic number, because the mean of its divisors is an integer number (11773464).

Almost surely, 2^111330989 is an apocalyptic number.

It is an amenable number.

111330989 is a deficient number, since it is larger than the sum of its proper divisors (29950579).

111330989 is a wasteful number, since it uses less digits than its factorization.

111330989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206576 (or 206569 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 35.

The square root of 111330989 is about 10551.3501031858. The cubic root of 111330989 is about 481.0667666073.

It can be divided in two parts, 11 and 1330989, that added together give a cube (1331000 = 110³).

The spelling of 111330989 in words is "one hundred eleven million, three hundred thirty thousand, nine hundred eighty-nine".