743333321 has 8 divisors (see below), whose sum is σ = 775832904. Its totient is φ = 711518080.

The previous prime is 743333317. The next prime is 743333351. The reversal of 743333321 is 123333347.

It can be written as a sum of positive squares in 4 ways, for example, as 16491721 + 726841600 = 4061^2 + 26960^2 .

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 743333321 - 2² = 743333317 is a prime.

It is a super-2 number, since 2×743333321² = 1105088852217778082, which contains 22 as substring.

It is a Duffinian number.

It is a nialpdrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (743333351) 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, 168866 + ... + 173211.

It is an arithmetic number, because the mean of its divisors is an integer number (96979113).

Almost surely, 2^743333321 is an apocalyptic number.

It is an amenable number.

743333321 is a deficient number, since it is larger than the sum of its proper divisors (32499583).

743333321 is a wasteful number, since it uses less digits than its factorization.

743333321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 342171.

The product of its digits is 13608, while the sum is 29.

The square root of 743333321 is about 27264.1398360557. The cubic root of 743333321 is about 905.8602448870.

Adding to 743333321 its reverse (123333347), we get a palindrome (866666668).

The spelling of 743333321 in words is "seven hundred forty-three million, three hundred thirty-three thousand, three hundred twenty-one".