133301321 has 8 divisors (see below), whose sum is σ = 141214080. Its totient is φ = 125478288.

The previous prime is 133301303. The next prime is 133301323. The reversal of 133301321 is 123103331.

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 133301321 - 2¹⁸ = 133039177 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 133301321.

It is not an unprimeable number, because it can be changed into a prime (133301323) 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, 19361 + ... + 25326.

It is an arithmetic number, because the mean of its divisors is an integer number (17651760).

Almost surely, 2^133301321 is an apocalyptic number.

It is an amenable number.

133301321 is a deficient number, since it is larger than the sum of its proper divisors (7912759).

133301321 is a wasteful number, since it uses less digits than its factorization.

133301321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44863.

The product of its (nonzero) digits is 162, while the sum is 17.

The square root of 133301321 is about 11545.6191258849. The cubic root of 133301321 is about 510.8320660682.

Adding to 133301321 its reverse (123103331), we get a palindrome (256404652).

The spelling of 133301321 in words is "one hundred thirty-three million, three hundred one thousand, three hundred twenty-one".