133212329 has 4 divisors (see below), whose sum is σ = 133282560. Its totient is φ = 133142100.

The previous prime is 133212319. The next prime is 133212397. The reversal of 133212329 is 923212331.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 923212331 = 5023 ⋅183797.

It is a cyclic number.

It is not a de Polignac number, because 133212329 - 2⁸ = 133212073 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 133212298 and 133212307.

It is not an unprimeable number, because it can be changed into a prime (133212319) 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, 32189 + ... + 36090.

It is an arithmetic number, because the mean of its divisors is an integer number (33320640).

Almost surely, 2^133212329 is an apocalyptic number.

It is an amenable number.

133212329 is a deficient number, since it is larger than the sum of its proper divisors (70231).

133212329 is an equidigital number, since it uses as much as digits as its factorization.

133212329 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70230.

The product of its digits is 1944, while the sum is 26.

The square root of 133212329 is about 11541.7645531348. The cubic root of 133212329 is about 510.7183635507.

The spelling of 133212329 in words is "one hundred thirty-three million, two hundred twelve thousand, three hundred twenty-nine".