133213230 has 48 divisors (see below), whose sum is σ = 347793264. Its totient is φ = 35376000.

The previous prime is 133213229. The next prime is 133213259. The reversal of 133213230 is 32312331.

133213230 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19642 + ... + 25538.

It is an arithmetic number, because the mean of its divisors is an integer number (7245693).

Almost surely, 2^133213230 is an apocalyptic number.

133213230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

133213230 is an abundant number, since it is smaller than the sum of its proper divisors (214580034).

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

133213230 is a wasteful number, since it uses less digits than its factorization.

133213230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6161 (or 6158 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 18.

The square root of 133213230 is about 11541.8035852288. The cubic root of 133213230 is about 510.7195149862.

Adding to 133213230 its reverse (32312331), we get a palindrome (165525561).

The spelling of 133213230 in words is "one hundred thirty-three million, two hundred thirteen thousand, two hundred thirty".