133321331 has 8 divisors (see below), whose sum is σ = 156629424. Its totient is φ = 111877920.

The previous prime is 133321319. The next prime is 133321333. The reversal of 133321331 is 133123331.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 133321331 - 2⁶ = 133321267 is a prime.

It is a super-2 number, since 2×133321331² = 35549154599223122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133321333) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 466016 + ... + 466301.

It is an arithmetic number, because the mean of its divisors is an integer number (19578678).

Almost surely, 2^133321331 is an apocalyptic number.

133321331 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

133321331 is a deficient number, since it is larger than the sum of its proper divisors (23308093).

133321331 is a wasteful number, since it uses less digits than its factorization.

133321331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 932341.

The product of its digits is 486, while the sum is 20.

The square root of 133321331 is about 11546.4856558175. The cubic root of 133321331 is about 510.8576253003.

Adding to 133321331 its reverse (133123331), we get a palindrome (266444662).

The spelling of 133321331 in words is "one hundred thirty-three million, three hundred twenty-one thousand, three hundred thirty-one".