2312303221 has 4 divisors (see below), whose sum is σ = 2344870944. Its totient is φ = 2279735500.

The previous prime is 2312303143. The next prime is 2312303243. The reversal of 2312303221 is 1223032132.

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.

It is a cyclic number.

It is not a de Polignac number, because 2312303221 - 2²¹ = 2310206069 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2312303261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16283755 + ... + 16283896.

It is an arithmetic number, because the mean of its divisors is an integer number (586217736).

Almost surely, 2^2312303221 is an apocalyptic number.

It is an amenable number.

2312303221 is a deficient number, since it is larger than the sum of its proper divisors (32567723).

2312303221 is an equidigital number, since it uses as much as digits as its factorization.

2312303221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32567722.

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

The square root of 2312303221 is about 48086.4141000345. The cubic root of 2312303221 is about 1322.3556080364.

Adding to 2312303221 its reverse (1223032132), we get a palindrome (3535335353).

The spelling of 2312303221 in words is "two billion, three hundred twelve million, three hundred three thousand, two hundred twenty-one".