133440323 has 2 divisors, whose sum is σ = 133440324. Its totient is φ = 133440322.

The previous prime is 133440317. The next prime is 133440331. The reversal of 133440323 is 323044331.

It is a weak prime.

It is an emirp because it is prime and its reverse (323044331) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 133440323 - 2⁸ = 133440067 is a prime.

It is not a weakly prime, because it can be changed into another prime (133440343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66720161 + 66720162.

It is an arithmetic number, because the mean of its divisors is an integer number (66720162).

Almost surely, 2^133440323 is an apocalyptic number.

133440323 is a deficient number, since it is larger than the sum of its proper divisors (1).

133440323 is an equidigital number, since it uses as much as digits as its factorization.

133440323 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 23.

The square root of 133440323 is about 11551.6372432656. The cubic root of 133440323 is about 511.0095637141.

Adding to 133440323 its reverse (323044331), we get a palindrome (456484654).

The spelling of 133440323 in words is "one hundred thirty-three million, four hundred forty thousand, three hundred twenty-three".