133330403 has 8 divisors (see below), whose sum is σ = 136554336. Its totient is φ = 130144000.

The previous prime is 133330397. The next prime is 133330423. The reversal of 133330403 is 304033331.

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 133330403 - 2⁴ = 133330387 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133330423) 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, 2126 + ... + 16467.

It is an arithmetic number, because the mean of its divisors is an integer number (17069292).

Almost surely, 2^133330403 is an apocalyptic number.

133330403 is a deficient number, since it is larger than the sum of its proper divisors (3223933).

133330403 is a wasteful number, since it uses less digits than its factorization.

133330403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18765.

The product of its (nonzero) digits is 972, while the sum is 20.

The square root of 133330403 is about 11546.8784959399. The cubic root of 133330403 is about 510.8692123315.

Adding to 133330403 its reverse (304033331), we get a palindrome (437363734).

The spelling of 133330403 in words is "one hundred thirty-three million, three hundred thirty thousand, four hundred three".