111445943 has 6 divisors (see below), whose sum is σ = 129641256. Its totient is φ = 95525052.

The previous prime is 111445933. The next prime is 111445969. The reversal of 111445943 is 349544111.

It is not a de Polignac number, because 111445943 - 2¹⁴ = 111429559 is a prime.

It is a super-2 number, since 2×111445943² = 24840396422318498, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111445933) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1137155 + ... + 1137252.

It is an arithmetic number, because the mean of its divisors is an integer number (21606876).

Almost surely, 2^111445943 is an apocalyptic number.

111445943 is a deficient number, since it is larger than the sum of its proper divisors (18195313).

111445943 is an equidigital number, since it uses as much as digits as its factorization.

111445943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2274421 (or 2274414 counting only the distinct ones).

The product of its digits is 8640, while the sum is 32.

The square root of 111445943 is about 10556.7960575167. The cubic root of 111445943 is about 481.2322836453.

The spelling of 111445943 in words is "one hundred eleven million, four hundred forty-five thousand, nine hundred forty-three".