133872023 has 4 divisors (see below), whose sum is σ = 133917168. Its totient is φ = 133826880.

The previous prime is 133871989. The next prime is 133872041. The reversal of 133872023 is 320278331.

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 133872023 - 2¹² = 133867927 is a prime.

It is a super-2 number, since 2×133872023² = 35843437084225058, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133872083) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17786 + ... + 24167.

It is an arithmetic number, because the mean of its divisors is an integer number (33479292).

Almost surely, 2^133872023 is an apocalyptic number.

133872023 is a deficient number, since it is larger than the sum of its proper divisors (45145).

133872023 is an equidigital number, since it uses as much as digits as its factorization.

133872023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45144.

The product of its (nonzero) digits is 6048, while the sum is 29.

The square root of 133872023 is about 11570.3078178586. The cubic root of 133872023 is about 511.5600354047.

The spelling of 133872023 in words is "one hundred thirty-three million, eight hundred seventy-two thousand, twenty-three".