133223130 has 80 divisors (see below), whose sum is σ = 373849344. Its totient is φ = 33976800.

The previous prime is 133223119. The next prime is 133223147. The reversal of 133223130 is 31322331.

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

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 15055 + ... + 22205.

Almost surely, 2^133223130 is an apocalyptic number.

133223130 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 133223130, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (186924672).

133223130 is an abundant number, since it is smaller than the sum of its proper divisors (240626214).

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

133223130 is a wasteful number, since it uses less digits than its factorization.

133223130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7193 (or 7184 counting only the distinct ones).

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

The square root of 133223130 is about 11542.2324530396. The cubic root of 133223130 is about 510.7321663771.

Adding to 133223130 its reverse (31322331), we get a palindrome (164545461).

The spelling of 133223130 in words is "one hundred thirty-three million, two hundred twenty-three thousand, one hundred thirty".