133021307 has 8 divisors (see below), whose sum is σ = 134840160. Its totient is φ = 131212800.

The previous prime is 133021271. The next prime is 133021321. The reversal of 133021307 is 703120331.

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 133021307 - 2⁸ = 133021051 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133021387) 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, 25307 + ... + 30107.

It is an arithmetic number, because the mean of its divisors is an integer number (16855020).

Almost surely, 2^133021307 is an apocalyptic number.

133021307 is a deficient number, since it is larger than the sum of its proper divisors (1818853).

133021307 is a wasteful number, since it uses less digits than its factorization.

133021307 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5173.

The product of its (nonzero) digits is 378, while the sum is 20.

The square root of 133021307 is about 11533.4863332819. The cubic root of 133021307 is about 510.4741291194.

Adding to 133021307 its reverse (703120331), we get a palindrome (836141638).

The spelling of 133021307 in words is "one hundred thirty-three million, twenty-one thousand, three hundred seven".