133650431 has 8 divisors (see below), whose sum is σ = 135551520. Its totient is φ = 131761152.

The previous prime is 133650403. The next prime is 133650443. The reversal of 133650431 is 134056331.

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 133650431 - 2¹⁸ = 133388287 is a prime.

It is a super-2 number, since 2×133650431² = 35724875412971522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 133650431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133650131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21215 + ... + 26783.

It is an arithmetic number, because the mean of its divisors is an integer number (16943940).

Almost surely, 2^133650431 is an apocalyptic number.

133650431 is a deficient number, since it is larger than the sum of its proper divisors (1901089).

133650431 is a wasteful number, since it uses less digits than its factorization.

133650431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5905.

The product of its (nonzero) digits is 3240, while the sum is 26.

The square root of 133650431 is about 11560.7279615083. The cubic root of 133650431 is about 511.2776258528.

The spelling of 133650431 in words is "one hundred thirty-three million, six hundred fifty thousand, four hundred thirty-one".