133608823 has 2 divisors, whose sum is σ = 133608824. Its totient is φ = 133608822.

The previous prime is 133608809. The next prime is 133608833. The reversal of 133608823 is 328806331.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 133608823 - 2²¹ = 131511671 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133608833) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66804411 + 66804412.

It is an arithmetic number, because the mean of its divisors is an integer number (66804412).

Almost surely, 2^133608823 is an apocalyptic number.

133608823 is a deficient number, since it is larger than the sum of its proper divisors (1).

133608823 is an equidigital number, since it uses as much as digits as its factorization.

133608823 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20736, while the sum is 34.

The square root of 133608823 is about 11558.9282807707. The cubic root of 133608823 is about 511.2245634290.

It can be divided in two parts, 133608 and 823, that added together give a palindrome (134431).

The spelling of 133608823 in words is "one hundred thirty-three million, six hundred eight thousand, eight hundred twenty-three".