133503947 has 2 divisors, whose sum is σ = 133503948. Its totient is φ = 133503946.

The previous prime is 133503919. The next prime is 133503959. The reversal of 133503947 is 749305331.

It is a strong prime.

It is an emirp because it is prime and its reverse (749305331) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 133503947 - 2¹² = 133499851 is a prime.

It is not a weakly prime, because it can be changed into another prime (133503967) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66751973 + 66751974.

It is an arithmetic number, because the mean of its divisors is an integer number (66751974).

Almost surely, 2^133503947 is an apocalyptic number.

133503947 is a deficient number, since it is larger than the sum of its proper divisors (1).

133503947 is an equidigital number, since it uses as much as digits as its factorization.

133503947 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34020, while the sum is 35.

The square root of 133503947 is about 11554.3908104235. The cubic root of 133503947 is about 511.0907668213.

The spelling of 133503947 in words is "one hundred thirty-three million, five hundred three thousand, nine hundred forty-seven".