133229817 has 24 divisors (see below), whose sum is σ = 220633920. Its totient is φ = 75889440.

The previous prime is 133229813. The next prime is 133229821. The reversal of 133229817 is 718922331.

It is an interprime number because it is at equal distance from previous prime (133229813) and next prime (133229821).

It is not a de Polignac number, because 133229817 - 2² = 133229813 is a prime.

It is not an unprimeable number, because it can be changed into a prime (133229813) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17659 + ... + 24047.

It is an arithmetic number, because the mean of its divisors is an integer number (9193080).

Almost surely, 2^133229817 is an apocalyptic number.

It is an amenable number.

133229817 is a deficient number, since it is larger than the sum of its proper divisors (87404103).

133229817 is a wasteful number, since it uses less digits than its factorization.

133229817 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6733 (or 6730 counting only the distinct ones).

The product of its digits is 18144, while the sum is 36.

The square root of 133229817 is about 11542.5221247351. The cubic root of 133229817 is about 510.7407114620.

The spelling of 133229817 in words is "one hundred thirty-three million, two hundred twenty-nine thousand, eight hundred seventeen".