111771713 has 4 divisors (see below), whose sum is σ = 115625940. Its totient is φ = 107917488.

The previous prime is 111771683. The next prime is 111771721. The reversal of 111771713 is 317177111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 317177111 = 643 ⋅493277.

It can be written as a sum of positive squares in 2 ways, for example, as 55100929 + 56670784 = 7423^2 + 7528^2 .

It is a cyclic number.

It is not a de Polignac number, because 111771713 - 2¹⁸ = 111509569 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29), and also a Moran number because the ratio is a prime number: 3854197 = 111771713 / (1 + 1 + 1 + 7 + 7 + 1 + 7 + 1 + 3).

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (111771773) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1927070 + ... + 1927127.

It is an arithmetic number, because the mean of its divisors is an integer number (28906485).

Almost surely, 2^111771713 is an apocalyptic number.

It is an amenable number.

111771713 is a deficient number, since it is larger than the sum of its proper divisors (3854227).

111771713 is an equidigital number, since it uses as much as digits as its factorization.

111771713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3854226.

The product of its digits is 1029, while the sum is 29.

The square root of 111771713 is about 10572.2141957113. The cubic root of 111771713 is about 481.7007276007.

The spelling of 111771713 in words is "one hundred eleven million, seven hundred seventy-one thousand, seven hundred thirteen".