133231214 has 4 divisors (see below), whose sum is σ = 199846824. Its totient is φ = 66615606.

The previous prime is 133231207. The next prime is 133231223. The reversal of 133231214 is 412132331.

133231214 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a congruent number.

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 as a sum of consecutive naturals, namely, 33307802 + ... + 33307805.

It is an arithmetic number, because the mean of its divisors is an integer number (49961706).

Almost surely, 2^133231214 is an apocalyptic number.

133231214 is a deficient number, since it is larger than the sum of its proper divisors (66615610).

133231214 is an equidigital number, since it uses as much as digits as its factorization.

133231214 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66615609.

The product of its digits is 432, while the sum is 20.

The square root of 133231214 is about 11542.5826399467. The cubic root of 133231214 is about 510.7424966036.

Adding to 133231214 its reverse (412132331), we get a palindrome (545363545).

The spelling of 133231214 in words is "one hundred thirty-three million, two hundred thirty-one thousand, two hundred fourteen".