111689313 has 16 divisors (see below), whose sum is σ = 150760896. Its totient is φ = 73543680.

The previous prime is 111689309. The next prime is 111689317. The reversal of 111689313 is 313986111.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (111689309) and next prime (111689317).

It is not a de Polignac number, because 111689313 - 2² = 111689309 is a prime.

It is not an unprimeable number, because it can be changed into a prime (111689317) 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 15 ways as a sum of consecutive naturals, for example, 193281 + ... + 193857.

It is an arithmetic number, because the mean of its divisors is an integer number (9422556).

Almost surely, 2^111689313 is an apocalyptic number.

It is an amenable number.

111689313 is a deficient number, since it is larger than the sum of its proper divisors (39071583).

111689313 is a wasteful number, since it uses less digits than its factorization.

111689313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1264.

The product of its digits is 3888, while the sum is 33.

The square root of 111689313 is about 10568.3164695234. The cubic root of 111689313 is about 481.5823258549.

The spelling of 111689313 in words is "one hundred eleven million, six hundred eighty-nine thousand, three hundred thirteen".