133203166 has 16 divisors (see below), whose sum is σ = 209184768. Its totient is φ = 63494200.

The previous prime is 133203163. The next prime is 133203181. The reversal of 133203166 is 661302331.

It is a self number, because there is not a number n which added to its sum of digits gives 133203166.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133203163) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9651 + ... + 18961.

It is an arithmetic number, because the mean of its divisors is an integer number (13074048).

Almost surely, 2^133203166 is an apocalyptic number.

133203166 is a deficient number, since it is larger than the sum of its proper divisors (75981602).

133203166 is a wasteful number, since it uses less digits than its factorization.

133203166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9647.

The product of its (nonzero) digits is 1944, while the sum is 25.

The square root of 133203166 is about 11541.3675966066. The cubic root of 133203166 is about 510.7066533742.

Adding to 133203166 its reverse (661302331), we get a palindrome (794505497).

The spelling of 133203166 in words is "one hundred thirty-three million, two hundred three thousand, one hundred sixty-six".