432031321 has 4 divisors (see below), whose sum is σ = 435139600. Its totient is φ = 428923044.

The previous prime is 432031297. The next prime is 432031339. The reversal of 432031321 is 123130234.

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, and also an emirpimes, since its reverse is a distinct semiprime: 123130234 = 2 ⋅61565117.

It is a cyclic number.

It is not a de Polignac number, because 432031321 - 2¹⁹ = 431507033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (432031361) 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, 1553931 + ... + 1554208.

It is an arithmetic number, because the mean of its divisors is an integer number (108784900).

Almost surely, 2^432031321 is an apocalyptic number.

It is an amenable number.

432031321 is a deficient number, since it is larger than the sum of its proper divisors (3108279).

432031321 is a wasteful number, since it uses less digits than its factorization.

432031321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3108278.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 432031321 is about 20785.3631433276. The cubic root of 432031321 is about 755.9708989339.

Adding to 432031321 its reverse (123130234), we get a palindrome (555161555).

The spelling of 432031321 in words is "four hundred thirty-two million, thirty-one thousand, three hundred twenty-one".