111885139 has 2 divisors, whose sum is σ = 111885140. Its totient is φ = 111885138.

The previous prime is 111885101. The next prime is 111885149. The reversal of 111885139 is 931588111.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 111885139 - 2¹¹ = 111883091 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 111885098 and 111885107.

It is not a weakly prime, because it can be changed into another prime (111885149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55942569 + 55942570.

It is an arithmetic number, because the mean of its divisors is an integer number (55942570).

Almost surely, 2^111885139 is an apocalyptic number.

111885139 is a deficient number, since it is larger than the sum of its proper divisors (1).

111885139 is an equidigital number, since it uses as much as digits as its factorization.

111885139 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8640, while the sum is 37.

The square root of 111885139 is about 10577.5771800540. The cubic root of 111885139 is about 481.8636159072.

The spelling of 111885139 in words is "one hundred eleven million, eight hundred eighty-five thousand, one hundred thirty-nine".