133631201 has 8 divisors (see below), whose sum is σ = 147070944. Its totient is φ = 120406720.

The previous prime is 133631167. The next prime is 133631209. The reversal of 133631201 is 102136331.

It is a happy number.

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 133631201 - 2¹⁰ = 133630177 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (133631209) 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, 52511 + ... + 54996.

It is an arithmetic number, because the mean of its divisors is an integer number (18383868).

Almost surely, 2^133631201 is an apocalyptic number.

133631201 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

133631201 is a deficient number, since it is larger than the sum of its proper divisors (13439743).

133631201 is a wasteful number, since it uses less digits than its factorization.

133631201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107631.

The product of its (nonzero) digits is 324, while the sum is 20.

The square root of 133631201 is about 11559.8962365585. The cubic root of 133631201 is about 511.2531033222.

Adding to 133631201 its reverse (102136331), we get a palindrome (235767532).

The spelling of 133631201 in words is "one hundred thirty-three million, six hundred thirty-one thousand, two hundred one".