133767983 has 4 divisors (see below), whose sum is σ = 133791240. Its totient is φ = 133744728.

The previous prime is 133767973. The next prime is 133768003. The reversal of 133767983 is 389767331.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 133767983 - 2⁸ = 133767727 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 (133767973) 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, 4013 + ... + 16841.

It is an arithmetic number, because the mean of its divisors is an integer number (33447810).

Almost surely, 2^133767983 is an apocalyptic number.

133767983 is a deficient number, since it is larger than the sum of its proper divisors (23257).

133767983 is a wasteful number, since it uses less digits than its factorization.

133767983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23256.

The product of its digits is 571536, while the sum is 47.

The square root of 133767983 is about 11565.8109529769. The cubic root of 133767983 is about 511.4274797037.

The spelling of 133767983 in words is "one hundred thirty-three million, seven hundred sixty-seven thousand, nine hundred eighty-three".