133432331 has 8 divisors (see below), whose sum is σ = 134811600. Its totient is φ = 132059808.

The previous prime is 133432291. The next prime is 133432333. The reversal of 133432331 is 133234331.

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

It is a cyclic number.

It is not a de Polignac number, because 133432331 - 2¹⁰ = 133431307 is a prime.

It is a super-2 number, since 2×133432331² = 35608373912187122, 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 = 133432297 and 133432306.

It is not an unprimeable number, because it can be changed into a prime (133432333) 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, 44285 + ... + 47201.

It is an arithmetic number, because the mean of its divisors is an integer number (16851450).

Almost surely, 2^133432331 is an apocalyptic number.

133432331 is a deficient number, since it is larger than the sum of its proper divisors (1379269).

133432331 is a wasteful number, since it uses less digits than its factorization.

133432331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3373.

The product of its digits is 1944, while the sum is 23.

The square root of 133432331 is about 11551.2913130957. The cubic root of 133432331 is about 510.9993617255. Note that the first 3 decimals are identical.

Adding to 133432331 its reverse (133234331), we get a palindrome (266666662).

The spelling of 133432331 in words is "one hundred thirty-three million, four hundred thirty-two thousand, three hundred thirty-one".