133113817 has 2 divisors, whose sum is σ = 133113818. Its totient is φ = 133113816.

The previous prime is 133113803. The next prime is 133113847. The reversal of 133113817 is 718311331.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 119006281 + 14107536 = 10909^2 + 3756^2 .

It is a cyclic number.

It is not a de Polignac number, because 133113817 - 2¹⁹ = 132589529 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (133113847) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66556908 + 66556909.

It is an arithmetic number, because the mean of its divisors is an integer number (66556909).

Almost surely, 2^133113817 is an apocalyptic number.

It is an amenable number.

133113817 is a deficient number, since it is larger than the sum of its proper divisors (1).

133113817 is an equidigital number, since it uses as much as digits as its factorization.

133113817 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1512, while the sum is 28.

The square root of 133113817 is about 11537.4961321770. The cubic root of 133113817 is about 510.5924385332.

The spelling of 133113817 in words is "one hundred thirty-three million, one hundred thirteen thousand, eight hundred seventeen".