111843397 has 4 divisors (see below), whose sum is σ = 111922560. Its totient is φ = 111764236.

The previous prime is 111843383. The next prime is 111843419. The reversal of 111843397 is 793348111.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 793348111 = 151 ⋅5253961.

It is a cyclic number.

It is not a de Polignac number, because 111843397 - 2¹¹ = 111841349 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111843377) 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, 37423 + ... + 40300.

It is an arithmetic number, because the mean of its divisors is an integer number (27980640).

Almost surely, 2^111843397 is an apocalyptic number.

It is an amenable number.

111843397 is a deficient number, since it is larger than the sum of its proper divisors (79163).

111843397 is an equidigital number, since it uses as much as digits as its factorization.

111843397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79162.

The product of its digits is 18144, while the sum is 37.

The square root of 111843397 is about 10575.6038598276. The cubic root of 111843397 is about 481.8036840487.

The spelling of 111843397 in words is "one hundred eleven million, eight hundred forty-three thousand, three hundred ninety-seven".