111000987 has 24 divisors (see below), whose sum is σ = 166453248. Its totient is φ = 71204400.

The previous prime is 111000961. The next prime is 111001001. The reversal of 111000987 is 789000111.

It is not a de Polignac number, because 111000987 - 2⁷ = 111000859 is a prime.

It is a super-2 number, since 2×111000987² = 24642438229948338, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 111000987.

It is not an unprimeable number, because it can be changed into a prime (111000947) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 52248 + ... + 54330.

It is an arithmetic number, because the mean of its divisors is an integer number (6935552).

Almost surely, 2^111000987 is an apocalyptic number.

111000987 is a deficient number, since it is larger than the sum of its proper divisors (55452261).

111000987 is a wasteful number, since it uses less digits than its factorization.

111000987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2311 (or 2308 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 27.

The square root of 111000987 is about 10535.7005936957. The cubic root of 111000987 is about 480.5909778164.

The spelling of 111000987 in words is "one hundred eleven million, nine hundred eighty-seven", and thus it is an aban number.