133248347 has 4 divisors (see below), whose sum is σ = 133632696. Its totient is φ = 132864000.

The previous prime is 133248293. The next prime is 133248377. The reversal of 133248347 is 743842331.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 133248347 - 2²² = 129054043 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133248377) 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 in 3 ways as a sum of consecutive naturals, for example, 191654 + ... + 192347.

It is an arithmetic number, because the mean of its divisors is an integer number (33408174).

Almost surely, 2^133248347 is an apocalyptic number.

133248347 is a deficient number, since it is larger than the sum of its proper divisors (384349).

133248347 is an equidigital number, since it uses as much as digits as its factorization.

133248347 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 384348.

The product of its digits is 48384, while the sum is 35.

The square root of 133248347 is about 11543.3247810152. The cubic root of 133248347 is about 510.7643888111.

The spelling of 133248347 in words is "one hundred thirty-three million, two hundred forty-eight thousand, three hundred forty-seven".