111247983 has 144 divisors (see below), whose sum is σ = 230480640. Its totient is φ = 50803200.

The previous prime is 111247979. The next prime is 111247991. The reversal of 111247983 is 389742111.

It is a happy number.

It is not a de Polignac number, because 111247983 - 2² = 111247979 is a prime.

It is a super-2 number, since 2×111247983² = 24752227443136578, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111247943) 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 143 ways as a sum of consecutive naturals, for example, 1566838 + ... + 1566908.

It is an arithmetic number, because the mean of its divisors is an integer number (1600560).

Almost surely, 2^111247983 is an apocalyptic number.

111247983 is an abundant number, since it is smaller than the sum of its proper divisors (119232657).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

111247983 is a wasteful number, since it uses less digits than its factorization.

111247983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138 (or 128 counting only the distinct ones).

The product of its digits is 12096, while the sum is 36.

The square root of 111247983 is about 10547.4159394612. The cubic root of 111247983 is about 480.9471791906.

The spelling of 111247983 in words is "one hundred eleven million, two hundred forty-seven thousand, nine hundred eighty-three".