321343453 has 4 divisors (see below), whose sum is σ = 321615360. Its totient is φ = 321071548.

The previous prime is 321343439. The next prime is 321343459. The reversal of 321343453 is 354343123.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-321343453 is a prime.

It is a super-2 number, since 2×321343453² = 206523229571926418, 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 (321343459) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 134173 + ... + 136546.

It is an arithmetic number, because the mean of its divisors is an integer number (80403840).

Almost surely, 2^321343453 is an apocalyptic number.

It is an amenable number.

321343453 is a deficient number, since it is larger than the sum of its proper divisors (271907).

321343453 is a wasteful number, since it uses less digits than its factorization.

321343453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 271906.

The product of its digits is 12960, while the sum is 28.

The square root of 321343453 is about 17926.0551432824. The cubic root of 321343453 is about 684.9462390543.

Adding to 321343453 its reverse (354343123), we get a palindrome (675686576).

The spelling of 321343453 in words is "three hundred twenty-one million, three hundred forty-three thousand, four hundred fifty-three".