321423430 has 16 divisors (see below), whose sum is σ = 578766384. Its totient is φ = 128524000.

The previous prime is 321423391. The next prime is 321423433. The reversal of 321423430 is 34324123.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321423433) 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, 52089 + ... + 57931.

It is an arithmetic number, because the mean of its divisors is an integer number (36172899).

Almost surely, 2^321423430 is an apocalyptic number.

321423430 is a deficient number, since it is larger than the sum of its proper divisors (257342954).

321423430 is a wasteful number, since it uses less digits than its factorization.

321423430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11351.

The product of its (nonzero) digits is 1728, while the sum is 22.

The square root of 321423430 is about 17928.2857518503. The cubic root of 321423430 is about 685.0030582207.

Adding to 321423430 its reverse (34324123), we get a palindrome (355747553).

The spelling of 321423430 in words is "three hundred twenty-one million, four hundred twenty-three thousand, four hundred thirty".