231302323321 has 16 divisors (see below), whose sum is σ = 240396701328. Its totient is φ = 222377702400.

The previous prime is 231302323309. The next prime is 231302323327. The reversal of 231302323321 is 123323203132.

It can be written as a sum of positive squares in 8 ways, for example, as 1151855721 + 230150467600 = 33939^2 + 479740^2 .

It is not a de Polignac number, because 231302323321 - 2⁹ = 231302322809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231302323327) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3502015 + ... + 3567451.

It is an arithmetic number, because the mean of its divisors is an integer number (15024793833).

Almost surely, 2^231302323321 is an apocalyptic number.

It is an amenable number.

231302323321 is a deficient number, since it is larger than the sum of its proper divisors (9094378007).

231302323321 is a wasteful number, since it uses less digits than its factorization.

231302323321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66732.

The product of its (nonzero) digits is 3888, while the sum is 25.

Adding to 231302323321 its reverse (123323203132), we get a palindrome (354625526453).

The spelling of 231302323321 in words is "two hundred thirty-one billion, three hundred two million, three hundred twenty-three thousand, three hundred twenty-one".