111930643 has 4 divisors (see below), whose sum is σ = 122106168. Its totient is φ = 101755120.

The previous prime is 111930617. The next prime is 111930649. The reversal of 111930643 is 346039111.

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

It is a cyclic number.

It is not a de Polignac number, because 111930643 - 2⁹ = 111930131 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111930649) 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, 5087746 + ... + 5087767.

It is an arithmetic number, because the mean of its divisors is an integer number (30526542).

Almost surely, 2^111930643 is an apocalyptic number.

111930643 is a deficient number, since it is larger than the sum of its proper divisors (10175525).

111930643 is a wasteful number, since it uses less digits than its factorization.

111930643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10175524.

The product of its (nonzero) digits is 1944, while the sum is 28.

The square root of 111930643 is about 10579.7279265584. The cubic root of 111930643 is about 481.9289321481.

Adding to 111930643 its reverse (346039111), we get a palindrome (457969754).

The spelling of 111930643 in words is "one hundred eleven million, nine hundred thirty thousand, six hundred forty-three".