133139471 has 2 divisors, whose sum is σ = 133139472. Its totient is φ = 133139470.

The previous prime is 133139443. The next prime is 133139473. The reversal of 133139471 is 174931331.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-133139471 is a prime.

It is a super-3 number, since 3×133139471³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

Together with 133139473, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133139473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66569735 + 66569736.

It is an arithmetic number, because the mean of its divisors is an integer number (66569736).

Almost surely, 2^133139471 is an apocalyptic number.

133139471 is a deficient number, since it is larger than the sum of its proper divisors (1).

133139471 is an equidigital number, since it uses as much as digits as its factorization.

133139471 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6804, while the sum is 32.

The square root of 133139471 is about 11538.6078449699. The cubic root of 133139471 is about 510.6252372747.

The spelling of 133139471 in words is "one hundred thirty-three million, one hundred thirty-nine thousand, four hundred seventy-one".