133211430 has 96 divisors (see below), whose sum is σ = 380090880. Its totient is φ = 32101440.

The previous prime is 133211417. The next prime is 133211437. The reversal of 133211430 is 34112331.

133211430 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 not an unprimeable number, because it can be changed into a prime (133211437) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 236329 + ... + 236891.

It is an arithmetic number, because the mean of its divisors is an integer number (3959280).

Almost surely, 2^133211430 is an apocalyptic number.

133211430 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 133211430, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (190045440).

133211430 is an abundant number, since it is smaller than the sum of its proper divisors (246879450).

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

133211430 is a wasteful number, since it uses less digits than its factorization.

133211430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 826 (or 823 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 133211430 is about 11541.7256075511. The cubic root of 133211430 is about 510.7172146660.

Adding to 133211430 its reverse (34112331), we get a palindrome (167323761).

Subtracting from 133211430 its reverse (34112331), we obtain a palindrome (99099099).

The spelling of 133211430 in words is "one hundred thirty-three million, two hundred eleven thousand, four hundred thirty".