133316423 has 4 divisors (see below), whose sum is σ = 133374528. Its totient is φ = 133258320.

The previous prime is 133316411. The next prime is 133316453. The reversal of 133316423 is 324613331.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 324613331 = 7 ⋅46373333.

It is a cyclic number.

It is not a de Polignac number, because 133316423 - 2²⁰ = 132267847 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 133316392 and 133316401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133316453) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25463 + ... + 30248.

It is an arithmetic number, because the mean of its divisors is an integer number (33343632).

Almost surely, 2^133316423 is an apocalyptic number.

133316423 is a deficient number, since it is larger than the sum of its proper divisors (58105).

133316423 is an equidigital number, since it uses as much as digits as its factorization.

133316423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58104.

The product of its digits is 3888, while the sum is 26.

The square root of 133316423 is about 11546.2731216614. The cubic root of 133316423 is about 510.8513564360.

Adding to 133316423 its reverse (324613331), we get a palindrome (457929754).

The spelling of 133316423 in words is "one hundred thirty-three million, three hundred sixteen thousand, four hundred twenty-three".