133031330 has 8 divisors (see below), whose sum is σ = 239456412. Its totient is φ = 53212528.

The previous prime is 133031299. The next prime is 133031377. The reversal of 133031330 is 33130331.

It can be written as a sum of positive squares in 2 ways, for example, as 123365449 + 9665881 = 11107^2 + 3109^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 133031299 and 133031308.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6651557 + ... + 6651576.

Almost surely, 2^133031330 is an apocalyptic number.

133031330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

133031330 is a deficient number, since it is larger than the sum of its proper divisors (106425082).

133031330 is a wasteful number, since it uses less digits than its factorization.

133031330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13303140.

The product of its (nonzero) digits is 243, while the sum is 17.

The square root of 133031330 is about 11533.9208424542. The cubic root of 133031330 is about 510.4869500070.

Adding to 133031330 its reverse (33130331), we get a palindrome (166161661).

Subtracting from 133031330 its reverse (33130331), we obtain a palindrome (99900999).

The spelling of 133031330 in words is "one hundred thirty-three million, thirty-one thousand, three hundred thirty".