133791323 has 8 divisors (see below), whose sum is σ = 138060720. Its totient is φ = 129569920.

The previous prime is 133791313. The next prime is 133791337. The reversal of 133791323 is 323197331.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 133791323 - 2¹⁴ = 133774939 is a prime.

It is a super-2 number, since 2×133791323² = 35800236220180658, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 133791323.

It is not an unprimeable number, because it can be changed into a prime (133791313) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6293 + ... + 17526.

It is an arithmetic number, because the mean of its divisors is an integer number (17257590).

Almost surely, 2^133791323 is an apocalyptic number.

133791323 is a deficient number, since it is larger than the sum of its proper divisors (4269397).

133791323 is a wasteful number, since it uses less digits than its factorization.

133791323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23997.

The product of its digits is 10206, while the sum is 32.

The square root of 133791323 is about 11566.8199173325. The cubic root of 133791323 is about 511.4572228030.

The spelling of 133791323 in words is "one hundred thirty-three million, seven hundred ninety-one thousand, three hundred twenty-three".