133868303 has 4 divisors (see below), whose sum is σ = 139688688. Its totient is φ = 128047920.

The previous prime is 133868279. The next prime is 133868311. The reversal of 133868303 is 303868331.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 303868331 = 13 ⋅23374487.

It is a cyclic number.

It is not a de Polignac number, because 133868303 - 2¹⁴ = 133851919 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133868333) 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, 2910158 + ... + 2910203.

It is an arithmetic number, because the mean of its divisors is an integer number (34922172).

Almost surely, 2^133868303 is an apocalyptic number.

133868303 is a deficient number, since it is larger than the sum of its proper divisors (5820385).

133868303 is an equidigital number, since it uses as much as digits as its factorization.

133868303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5820384.

The product of its (nonzero) digits is 31104, while the sum is 35.

The square root of 133868303 is about 11570.1470604310. The cubic root of 133868303 is about 511.5552969963. Note that the first 3 decimals are identical.

The spelling of 133868303 in words is "one hundred thirty-three million, eight hundred sixty-eight thousand, three hundred three".