133219423 has 2 divisors, whose sum is σ = 133219424. Its totient is φ = 133219422.

The previous prime is 133219421. The next prime is 133219433. The reversal of 133219423 is 324912331.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 133219423 - 2¹ = 133219421 is a prime.

Together with 133219421, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 133219391 and 133219400.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133219421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66609711 + 66609712.

It is an arithmetic number, because the mean of its divisors is an integer number (66609712).

Almost surely, 2^133219423 is an apocalyptic number.

133219423 is a deficient number, since it is larger than the sum of its proper divisors (1).

133219423 is an equidigital number, since it uses as much as digits as its factorization.

133219423 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3888, while the sum is 28.

The square root of 133219423 is about 11542.0718677367. The cubic root of 133219423 is about 510.7274292075.

The spelling of 133219423 in words is "one hundred thirty-three million, two hundred nineteen thousand, four hundred twenty-three".