133230930 has 128 divisors (see below), whose sum is σ = 383201280. Its totient is φ = 29003520.

The previous prime is 133230919. The next prime is 133230931. The reversal of 133230930 is 39032331.

It is a partition number, being equal to the number of ways a set of 97 identical objects can be partitioned into subset.

It is a self number, because there is not a number n which added to its sum of digits gives 133230930.

It is not an unprimeable number, because it can be changed into a prime (133230931) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 797707 + ... + 797873.

It is an arithmetic number, because the mean of its divisors is an integer number (2993760).

Almost surely, 2^133230930 is an apocalyptic number.

133230930 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 133230930, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (191600640).

133230930 is an abundant number, since it is smaller than the sum of its proper divisors (249970350).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

133230930 is a wasteful number, since it uses less digits than its factorization.

133230930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 344.

The product of its (nonzero) digits is 1458, while the sum is 24.

The square root of 133230930 is about 11542.5703376674. The cubic root of 133230930 is about 510.7421336983.

The spelling of 133230930 in words is "one hundred thirty-three million, two hundred thirty thousand, nine hundred thirty".