133213023 has 6 divisors (see below), whose sum is σ = 192418824. Its totient is φ = 88808676.

The previous prime is 133212949. The next prime is 133213043. The reversal of 133213023 is 320312331.

It is not a de Polignac number, because 133213023 - 2⁸ = 133212767 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 133212987 and 133213005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133213043) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7400715 + ... + 7400732.

It is an arithmetic number, because the mean of its divisors is an integer number (32069804).

Almost surely, 2^133213023 is an apocalyptic number.

133213023 is a deficient number, since it is larger than the sum of its proper divisors (59205801).

133213023 is a wasteful number, since it uses less digits than its factorization.

133213023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14801453 (or 14801450 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 18.

The square root of 133213023 is about 11541.7946178227. The cubic root of 133213023 is about 510.7192504504.

Adding to 133213023 its reverse (320312331), we get a palindrome (453525354).

The spelling of 133213023 in words is "one hundred thirty-three million, two hundred thirteen thousand, twenty-three".