133893233 has 2 divisors, whose sum is σ = 133893234. Its totient is φ = 133893232.

The previous prime is 133893197. The next prime is 133893239. The reversal of 133893233 is 332398331.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 121727089 + 12166144 = 11033^2 + 3488^2 .

It is a cyclic number.

It is not a de Polignac number, because 133893233 - 2¹² = 133889137 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 133893193 and 133893202.

It is not a weakly prime, because it can be changed into another prime (133893239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66946616 + 66946617.

It is an arithmetic number, because the mean of its divisors is an integer number (66946617).

Almost surely, 2^133893233 is an apocalyptic number.

It is an amenable number.

133893233 is a deficient number, since it is larger than the sum of its proper divisors (1).

133893233 is an equidigital number, since it uses as much as digits as its factorization.

133893233 is an evil number, because the sum of its binary digits is even.

The product of its digits is 34992, while the sum is 35.

The square root of 133893233 is about 11571.2243518134. The cubic root of 133893233 is about 511.5870502984.

The spelling of 133893233 in words is "one hundred thirty-three million, eight hundred ninety-three thousand, two hundred thirty-three".