111021313 has 16 divisors (see below), whose sum is σ = 128793280. Its totient is φ = 94820544.

The previous prime is 111021283. The next prime is 111021319. The reversal of 111021313 is 313120111.

It is not a de Polignac number, because 111021313 - 2²⁵ = 77466881 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111021293 and 111021302.

It is not an unprimeable number, because it can be changed into a prime (111021319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5395 + ... + 15847.

It is an arithmetic number, because the mean of its divisors is an integer number (8049580).

Almost surely, 2^111021313 is an apocalyptic number.

111021313 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

111021313 is a deficient number, since it is larger than the sum of its proper divisors (17771967).

111021313 is a wasteful number, since it uses less digits than its factorization.

111021313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10528.

The product of its (nonzero) digits is 18, while the sum is 13.

The square root of 111021313 is about 10536.6651745227. The cubic root of 111021313 is about 480.6203105767.

Adding to 111021313 its reverse (313120111), we get a palindrome (424141424).

The spelling of 111021313 in words is "one hundred eleven million, twenty-one thousand, three hundred thirteen".