323440421 has 8 divisors (see below), whose sum is σ = 346625664. Its totient is φ = 301015440.

The previous prime is 323440399. The next prime is 323440427. The reversal of 323440421 is 124044323.

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 323440421 - 2²² = 319246117 is a prime.

It is a super-2 number, since 2×323440421² = 209227411873314482, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (323440427) 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, 189185 + ... + 190886.

It is an arithmetic number, because the mean of its divisors is an integer number (43328208).

Almost surely, 2^323440421 is an apocalyptic number.

It is an amenable number.

323440421 is a deficient number, since it is larger than the sum of its proper divisors (23185243).

323440421 is a wasteful number, since it uses less digits than its factorization.

323440421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 380131.

The product of its (nonzero) digits is 2304, while the sum is 23.

The square root of 323440421 is about 17984.4494216531. The cubic root of 323440421 is about 686.4329114741.

Adding to 323440421 its reverse (124044323), we get a palindrome (447484744).

The spelling of 323440421 in words is "three hundred twenty-three million, four hundred forty thousand, four hundred twenty-one".