133312001 has 4 divisors (see below), whose sum is σ = 133523904. Its totient is φ = 133100100.

The previous prime is 133311991. The next prime is 133312051. The reversal of 133312001 is 100213331.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-133312001 is a prime.

It is a super-2 number, since 2×133312001² = 35544179221248002, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (133312051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 105005 + ... + 106266.

It is an arithmetic number, because the mean of its divisors is an integer number (33380976).

Almost surely, 2^133312001 is an apocalyptic number.

It is an amenable number.

133312001 is a deficient number, since it is larger than the sum of its proper divisors (211903).

133312001 is an equidigital number, since it uses as much as digits as its factorization.

133312001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211902.

The product of its (nonzero) digits is 54, while the sum is 14.

The square root of 133312001 is about 11546.0816297132. The cubic root of 133312001 is about 510.8457081955.

Adding to 133312001 its reverse (100213331), we get a palindrome (233525332).

The spelling of 133312001 in words is "one hundred thirty-three million, three hundred twelve thousand, one".