111752321 has 4 divisors (see below), whose sum is σ = 114772692. Its totient is φ = 108731952.

The previous prime is 111752299. The next prime is 111752351. The reversal of 111752321 is 123257111.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 54538225 + 57214096 = 7385^2 + 7564^2 .

It is a cyclic number.

It is not a de Polignac number, because 111752321 - 2⁶ = 111752257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111752351) 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 3 ways as a sum of consecutive naturals, for example, 1510130 + ... + 1510203.

It is an arithmetic number, because the mean of its divisors is an integer number (28693173).

Almost surely, 2^111752321 is an apocalyptic number.

It is an amenable number.

111752321 is a deficient number, since it is larger than the sum of its proper divisors (3020371).

111752321 is an equidigital number, since it uses as much as digits as its factorization.

111752321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3020370.

The product of its digits is 420, while the sum is 23.

The square root of 111752321 is about 10571.2970348960. The cubic root of 111752321 is about 481.6728681941.

The spelling of 111752321 in words is "one hundred eleven million, seven hundred fifty-two thousand, three hundred twenty-one".