432311321 has 4 divisors (see below), whose sum is σ = 465566052. Its totient is φ = 399056592.

The previous prime is 432311317. The next prime is 432311333. The reversal of 432311321 is 123113234.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 123113234 = 2 ⋅61556617.

It can be written as a sum of positive squares in 2 ways, for example, as 20830096 + 411481225 = 4564^2 + 20285^2 .

It is a cyclic number.

It is not a de Polignac number, because 432311321 - 2² = 432311317 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 432311293 and 432311302.

It is not an unprimeable number, because it can be changed into a prime (432311221) 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, 16627346 + ... + 16627371.

It is an arithmetic number, because the mean of its divisors is an integer number (116391513).

Almost surely, 2^432311321 is an apocalyptic number.

It is an amenable number.

432311321 is a deficient number, since it is larger than the sum of its proper divisors (33254731).

432311321 is a wasteful number, since it uses less digits than its factorization.

432311321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33254730.

The product of its digits is 432, while the sum is 20.

The square root of 432311321 is about 20792.0975613332. The cubic root of 432311321 is about 756.1341788704.

Adding to 432311321 its reverse (123113234), we get a palindrome (555424555).

The spelling of 432311321 in words is "four hundred thirty-two million, three hundred eleven thousand, three hundred twenty-one".