2320403221 has 4 divisors (see below), whose sum is σ = 2320539372. Its totient is φ = 2320267072.

The previous prime is 2320403213. The next prime is 2320403243. The reversal of 2320403221 is 1223040232.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 735168996 + 1585234225 = 27114^2 + 39815^2 .

It is a cyclic number.

It is not a de Polignac number, because 2320403221 - 2³ = 2320403213 is a prime.

It is a super-2 number, since 2×2320403221² = 10768542216054349682, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2320403201) 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, 38116 + ... + 78061.

It is an arithmetic number, because the mean of its divisors is an integer number (580134843).

Almost surely, 2^2320403221 is an apocalyptic number.

It is an amenable number.

2320403221 is a deficient number, since it is larger than the sum of its proper divisors (136151).

2320403221 is a wasteful number, since it uses less digits than its factorization.

2320403221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136150.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 2320403221 is about 48170.5638434926. The cubic root of 2320403221 is about 1323.8978794877.

Adding to 2320403221 its reverse (1223040232), we get a palindrome (3543443453).

The spelling of 2320403221 in words is "two billion, three hundred twenty million, four hundred three thousand, two hundred twenty-one".