133303330 has 16 divisors (see below), whose sum is σ = 240884280. Its totient is φ = 53112832.

The previous prime is 133303279. The next prime is 133303337. The reversal of 133303330 is 33303331.

It can be written as a sum of positive squares in 4 ways, for example, as 117787609 + 15515721 = 10853^2 + 3939^2 .

It is a junction number, because it is equal to n+sod(n) for n = 133303298 and 133303307.

It is not an unprimeable number, because it can be changed into a prime (133303337) 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, 23365 + ... + 28504.

Almost surely, 2^133303330 is an apocalyptic number.

133303330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

133303330 is a deficient number, since it is larger than the sum of its proper divisors (107580950).

133303330 is a wasteful number, since it uses less digits than its factorization.

133303330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52133.

The product of its (nonzero) digits is 729, while the sum is 19.

The square root of 133303330 is about 11545.7061282539. The cubic root of 133303330 is about 510.8346323255.

Adding to 133303330 its reverse (33303331), we get a palindrome (166606661).

Subtracting from 133303330 its reverse (33303331), we obtain a palindrome (99999999).

The spelling of 133303330 in words is "one hundred thirty-three million, three hundred three thousand, three hundred thirty".