133203949 has 2 divisors, whose sum is σ = 133203950. Its totient is φ = 133203948.

The previous prime is 133203929. The next prime is 133204009. The reversal of 133203949 is 949302331.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 107122500 + 26081449 = 10350^2 + 5107^2 .

It is a cyclic number.

It is not a de Polignac number, because 133203949 - 2⁷ = 133203821 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133203919) by changing a digit.

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, 66601974 + 66601975.

It is an arithmetic number, because the mean of its divisors is an integer number (66601975).

Almost surely, 2^133203949 is an apocalyptic number.

It is an amenable number.

133203949 is a deficient number, since it is larger than the sum of its proper divisors (1).

133203949 is an equidigital number, since it uses as much as digits as its factorization.

133203949 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17496, while the sum is 34.

The square root of 133203949 is about 11541.4015180133. The cubic root of 133203949 is about 510.7076540574.

The spelling of 133203949 in words is "one hundred thirty-three million, two hundred three thousand, nine hundred forty-nine".