2321021231 has 4 divisors (see below), whose sum is σ = 2321119200. Its totient is φ = 2320923264.

The previous prime is 2321021207. The next prime is 2321021251. The reversal of 2321021231 is 1321201232.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2321021231 is a prime.

It is a super-2 number, since 2×2321021231² = 10774279109505510722, 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 (2321021251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11210 + ... + 69048.

It is an arithmetic number, because the mean of its divisors is an integer number (580279800).

Almost surely, 2^2321021231 is an apocalyptic number.

2321021231 is a deficient number, since it is larger than the sum of its proper divisors (97969).

2321021231 is an equidigital number, since it uses as much as digits as its factorization.

2321021231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97968.

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

The square root of 2321021231 is about 48176.9782261196. The cubic root of 2321021231 is about 1324.0154035304.

Adding to 2321021231 its reverse (1321201232), we get a palindrome (3642222463).

The spelling of 2321021231 in words is "two billion, three hundred twenty-one million, twenty-one thousand, two hundred thirty-one".