111408943 has 2 divisors, whose sum is σ = 111408944. Its totient is φ = 111408942.

The previous prime is 111408929. The next prime is 111408949. The reversal of 111408943 is 349804111.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 111408943 - 2¹⁷ = 111277871 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111408949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55704471 + 55704472.

It is an arithmetic number, because the mean of its divisors is an integer number (55704472).

Almost surely, 2^111408943 is an apocalyptic number.

111408943 is a deficient number, since it is larger than the sum of its proper divisors (1).

111408943 is an equidigital number, since it uses as much as digits as its factorization.

111408943 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 31.

The square root of 111408943 is about 10555.0434864097. The cubic root of 111408943 is about 481.1790214542.

The spelling of 111408943 in words is "one hundred eleven million, four hundred eight thousand, nine hundred forty-three".