133961803 has 2 divisors, whose sum is σ = 133961804. Its totient is φ = 133961802.

The previous prime is 133961777. The next prime is 133961827. The reversal of 133961803 is 308169331.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 133961803 - 2⁹ = 133961291 is a prime.

It is not a weakly prime, because it can be changed into another prime (133961833) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66980901 + 66980902.

It is an arithmetic number, because the mean of its divisors is an integer number (66980902).

Almost surely, 2^133961803 is an apocalyptic number.

133961803 is a deficient number, since it is larger than the sum of its proper divisors (1).

133961803 is an equidigital number, since it uses as much as digits as its factorization.

133961803 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11664, while the sum is 34.

The square root of 133961803 is about 11574.1869260869. The cubic root of 133961803 is about 511.6743674754.

The spelling of 133961803 in words is "one hundred thirty-three million, nine hundred sixty-one thousand, eight hundred three".