133870111 has 2 divisors, whose sum is σ = 133870112. Its totient is φ = 133870110.

The previous prime is 133870069. The next prime is 133870117. The reversal of 133870111 is 111078331.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 133870111 - 2⁹ = 133869599 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133870117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66935055 + 66935056.

It is an arithmetic number, because the mean of its divisors is an integer number (66935056).

Almost surely, 2^133870111 is an apocalyptic number.

133870111 is a deficient number, since it is larger than the sum of its proper divisors (1).

133870111 is an equidigital number, since it uses as much as digits as its factorization.

133870111 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 504, while the sum is 25.

The square root of 133870111 is about 11570.2251922769. The cubic root of 133870111 is about 511.5575999757.

The spelling of 133870111 in words is "one hundred thirty-three million, eight hundred seventy thousand, one hundred eleven".