133699283 has 4 divisors (see below), whose sum is σ = 134519688. Its totient is φ = 132878880.

The previous prime is 133699273. The next prime is 133699289. The reversal of 133699283 is 382996331.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 382996331 = 439 ⋅872429.

It is a cyclic number.

It is not a de Polignac number, because 133699283 - 2¹² = 133695187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133699289) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 409958 + ... + 410283.

It is an arithmetic number, because the mean of its divisors is an integer number (33629922).

Almost surely, 2^133699283 is an apocalyptic number.

133699283 is a deficient number, since it is larger than the sum of its proper divisors (820405).

133699283 is an equidigital number, since it uses as much as digits as its factorization.

133699283 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 820404.

The product of its digits is 209952, while the sum is 44.

The square root of 133699283 is about 11562.8406111993. The cubic root of 133699283 is about 511.3399124508.

The spelling of 133699283 in words is "one hundred thirty-three million, six hundred ninety-nine thousand, two hundred eighty-three".