321424430 has 16 divisors (see below), whose sum is σ = 597227904. Its totient is φ = 124422240.

The previous prime is 321424421. The next prime is 321424451. The reversal of 321424430 is 34424123.

It is a junction number, because it is equal to n+sod(n) for n = 321424396 and 321424405.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 518117 + ... + 518736.

It is an arithmetic number, because the mean of its divisors is an integer number (37326744).

Almost surely, 2^321424430 is an apocalyptic number.

321424430 is a deficient number, since it is larger than the sum of its proper divisors (275803474).

321424430 is a wasteful number, since it uses less digits than its factorization.

321424430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1036891.

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

The square root of 321424430 is about 17928.3136407193. The cubic root of 321424430 is about 685.0037686048.

Adding to 321424430 its reverse (34424123), we get a palindrome (355848553).

The spelling of 321424430 in words is "three hundred twenty-one million, four hundred twenty-four thousand, four hundred thirty".