133632331 has 16 divisors (see below), whose sum is σ = 154934208. Its totient is φ = 112896000.

The previous prime is 133632307. The next prime is 133632379. The reversal of 133632331 is 133236331.

It is not a de Polignac number, because 133632331 - 2⁹ = 133631819 is a prime.

It is a super-2 number, since 2×133632331² = 35715199776987122, 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 = 133632296 and 133632305.

It is not an unprimeable number, because it can be changed into a prime (133632391) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 190281 + ... + 190981.

It is an arithmetic number, because the mean of its divisors is an integer number (9683388).

Almost surely, 2^133632331 is an apocalyptic number.

133632331 is a deficient number, since it is larger than the sum of its proper divisors (21301877).

133632331 is a wasteful number, since it uses less digits than its factorization.

133632331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1062.

The product of its digits is 2916, while the sum is 25.

The square root of 133632331 is about 11559.9451123264. The cubic root of 133632331 is about 511.2545443888.

Adding to 133632331 its reverse (133236331), we get a palindrome (266868662).

The spelling of 133632331 in words is "one hundred thirty-three million, six hundred thirty-two thousand, three hundred thirty-one".