133122331 has 4 divisors (see below), whose sum is σ = 134138664. Its totient is φ = 132106000.

The previous prime is 133122323. The next prime is 133122361. The reversal of 133122331 is 133221331.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 133122331 - 2³ = 133122323 is a prime.

It is a super-2 number, since 2×133122331² = 35443110021747122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 133122299 and 133122308.

It is not an unprimeable number, because it can be changed into a prime (133122361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 507970 + ... + 508231.

It is an arithmetic number, because the mean of its divisors is an integer number (33534666).

Almost surely, 2^133122331 is an apocalyptic number.

133122331 is a deficient number, since it is larger than the sum of its proper divisors (1016333).

133122331 is a wasteful number, since it uses less digits than its factorization.

133122331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1016332.

The product of its digits is 324, while the sum is 19.

The square root of 133122331 is about 11537.8650971486. The cubic root of 133122331 is about 510.6033241834.

Adding to 133122331 its reverse (133221331), we get a palindrome (266343662).

The spelling of 133122331 in words is "one hundred thirty-three million, one hundred twenty-two thousand, three hundred thirty-one".