133919 has 2 divisors, whose sum is σ = 133920. Its totient is φ = 133918.

The previous prime is 133877. The next prime is 133949. The reversal of 133919 is 919331.

133919 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-133919 is a prime.

It is a super-2 number, since 2×133919² = 35868597122, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66959 + 66960.

It is an arithmetic number, because the mean of its divisors is an integer number (66960).

2¹³³⁹¹⁹ is an apocalyptic number.

133919 is a deficient number, since it is larger than the sum of its proper divisors (1).

133919 is an equidigital number, since it uses as much as digits as its factorization.

133919 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 729, while the sum is 26.

The square root of 133919 is about 365.9494500611. The cubic root of 133919 is about 51.1619865544.

The spelling of 133919 in words is "one hundred thirty-three thousand, nine hundred nineteen".