2321031221 has 8 divisors (see below), whose sum is σ = 2377464960. Its totient is φ = 2264891328.

The previous prime is 2321031179. The next prime is 2321031239. The reversal of 2321031221 is 1221301232.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2321031221 - 2⁶ = 2321031157 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2321031221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2321031421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57431 + ... + 89108.

It is an arithmetic number, because the mean of its divisors is an integer number (297183120).

Almost surely, 2^2321031221 is an apocalyptic number.

It is an amenable number.

2321031221 is a deficient number, since it is larger than the sum of its proper divisors (56433739).

2321031221 is a wasteful number, since it uses less digits than its factorization.

2321031221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146923.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 2321031221 is about 48177.0819062342. The cubic root of 2321031221 is about 1324.0173031102.

Adding to 2321031221 its reverse (1221301232), we get a palindrome (3542332453).

The spelling of 2321031221 in words is "two billion, three hundred twenty-one million, thirty-one thousand, two hundred twenty-one".