2312323221 has 32 divisors (see below), whose sum is σ = 3575214720. Its totient is φ = 1316542464.

The previous prime is 2312323183. The next prime is 2312323231. The reversal of 2312323221 is 1223232132.

It is a happy number.

It is not a de Polignac number, because 2312323221 - 2⁹ = 2312322709 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2312323231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9561 + ... + 68673.

It is an arithmetic number, because the mean of its divisors is an integer number (111725460).

Almost surely, 2^2312323221 is an apocalyptic number.

It is an amenable number.

2312323221 is a deficient number, since it is larger than the sum of its proper divisors (1262891499).

2312323221 is a wasteful number, since it uses less digits than its factorization.

2312323221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59205.

The product of its digits is 864, while the sum is 21.

The square root of 2312323221 is about 48086.6220585310. The cubic root of 2312323221 is about 1322.3594205461.

Adding to 2312323221 its reverse (1223232132), we get a palindrome (3535555353).

The spelling of 2312323221 in words is "two billion, three hundred twelve million, three hundred twenty-three thousand, two hundred twenty-one".