133688223 has 6 divisors (see below), whose sum is σ = 193105224. Its totient is φ = 89125476.

The previous prime is 133688197. The next prime is 133688227. The reversal of 133688223 is 322886331.

It is not a de Polignac number, because 133688223 - 2¹² = 133684127 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133688227) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7427115 + ... + 7427132.

It is an arithmetic number, because the mean of its divisors is an integer number (32184204).

Almost surely, 2^133688223 is an apocalyptic number.

133688223 is a deficient number, since it is larger than the sum of its proper divisors (59417001).

133688223 is a wasteful number, since it uses less digits than its factorization.

133688223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14854253 (or 14854250 counting only the distinct ones).

The product of its digits is 41472, while the sum is 36.

The square root of 133688223 is about 11562.3623451265. The cubic root of 133688223 is about 511.3258122122.

The spelling of 133688223 in words is "one hundred thirty-three million, six hundred eighty-eight thousand, two hundred twenty-three".