133234427 has 2 divisors, whose sum is σ = 133234428. Its totient is φ = 133234426.

The previous prime is 133234357. The next prime is 133234429. The reversal of 133234427 is 724432331.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-133234427 is a prime.

It is a super-3 number, since 3×133234427³ (a number of 25 digits) contains 333 as substring.

Together with 133234429, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 133234427.

It is not a weakly prime, because it can be changed into another prime (133234429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66617213 + 66617214.

It is an arithmetic number, because the mean of its divisors is an integer number (66617214).

Almost surely, 2^133234427 is an apocalyptic number.

133234427 is a deficient number, since it is larger than the sum of its proper divisors (1).

133234427 is an equidigital number, since it uses as much as digits as its factorization.

133234427 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12096, while the sum is 29.

The square root of 133234427 is about 11542.7218193977. The cubic root of 133234427 is about 510.7466022543.

Subtracting from 133234427 its product of digits (12096), we obtain a palindrome (133222331).

Adding to 133234427 its reverse (724432331), we get a palindrome (857666758).

The spelling of 133234427 in words is "one hundred thirty-three million, two hundred thirty-four thousand, four hundred twenty-seven".