133344321 has 8 divisors (see below), whose sum is σ = 193955424. Its totient is φ = 80814720.

The previous prime is 133344313. The next prime is 133344331. The reversal of 133344321 is 123443331.

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

It is not a de Polignac number, because 133344321 - 2³ = 133344313 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 133344291 and 133344300.

It is not an unprimeable number, because it can be changed into a prime (133344301) 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, 2020336 + ... + 2020401.

It is an arithmetic number, because the mean of its divisors is an integer number (24244428).

Almost surely, 2^133344321 is an apocalyptic number.

133344321 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

133344321 is a deficient number, since it is larger than the sum of its proper divisors (60611103).

133344321 is a wasteful number, since it uses less digits than its factorization.

133344321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4040751.

The product of its digits is 2592, while the sum is 24.

The square root of 133344321 is about 11547.4811539140. The cubic root of 133344321 is about 510.8869877979.

Adding to 133344321 its reverse (123443331), we get a palindrome (256787652).

It can be divided in two parts, 1333 and 44321, that added together give a palindrome (45654).

The spelling of 133344321 in words is "one hundred thirty-three million, three hundred forty-four thousand, three hundred twenty-one".