133885423 has 8 divisors (see below), whose sum is σ = 155520800. Its totient is φ = 112877280.

The previous prime is 133885397. The next prime is 133885447. The reversal of 133885423 is 324588331.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-133885423 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133885223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 156348 + ... + 157201.

It is an arithmetic number, because the mean of its divisors is an integer number (19440100).

Almost surely, 2^133885423 is an apocalyptic number.

133885423 is a deficient number, since it is larger than the sum of its proper divisors (21635377).

133885423 is an equidigital number, since it uses as much as digits as its factorization.

133885423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 313617.

The product of its digits is 69120, while the sum is 37.

The square root of 133885423 is about 11570.8868718003. The cubic root of 133885423 is about 511.5771031376.

The spelling of 133885423 in words is "one hundred thirty-three million, eight hundred eighty-five thousand, four hundred twenty-three".