230431321 has 2 divisors, whose sum is σ = 230431322. Its totient is φ = 230431320.

The previous prime is 230431309. The next prime is 230431337. The reversal of 230431321 is 123134032.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 214915600 + 15515721 = 14660^2 + 3939^2 .

It is a cyclic number.

It is not a de Polignac number, because 230431321 - 2¹⁷ = 230300249 is a prime.

It is not a weakly prime, because it can be changed into another prime (230431391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115215660 + 115215661.

It is an arithmetic number, because the mean of its divisors is an integer number (115215661).

Almost surely, 2^230431321 is an apocalyptic number.

It is an amenable number.

230431321 is a deficient number, since it is larger than the sum of its proper divisors (1).

230431321 is an equidigital number, since it uses as much as digits as its factorization.

230431321 is an odious number, because the sum of its binary digits is odd.

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

The square root of 230431321 is about 15179.9644597739. The cubic root of 230431321 is about 613.0753242600.

Adding to 230431321 its reverse (123134032), we get a palindrome (353565353).

The spelling of 230431321 in words is "two hundred thirty million, four hundred thirty-one thousand, three hundred twenty-one".