2221030231 has 4 divisors (see below), whose sum is σ = 2538320272. Its totient is φ = 1903740192.

The previous prime is 2221030211. The next prime is 2221030249. The reversal of 2221030231 is 1320301222.

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

It is a cyclic number.

It is not a de Polignac number, because 2221030231 - 2⁷ = 2221030103 is a prime.

It is a super-2 number, since 2×2221030231² = 9865950574031826722, 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 (2221030211) 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, 158645010 + ... + 158645023.

It is an arithmetic number, because the mean of its divisors is an integer number (634580068).

Almost surely, 2^2221030231 is an apocalyptic number.

2221030231 is a deficient number, since it is larger than the sum of its proper divisors (317290041).

2221030231 is an equidigital number, since it uses as much as digits as its factorization.

2221030231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 317290040.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 2221030231 is about 47127.8074070925. The cubic root of 2221030231 is about 1304.7225142659.

Adding to 2221030231 its reverse (1320301222), we get a palindrome (3541331453).

It can be divided in two parts, 22210 and 30231, that added together give a square (52441 = 229²).

The spelling of 2221030231 in words is "two billion, two hundred twenty-one million, thirty thousand, two hundred thirty-one".