2220331231 has 4 divisors (see below), whose sum is σ = 2220635200. Its totient is φ = 2220027264.

The previous prime is 2220331207. The next prime is 2220331297. The reversal of 2220331231 is 1321330222.

2220331231 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 2220331231 - 2⁹ = 2220330719 is a prime.

It is a super-2 number, since 2×2220331231² = 9859741550707950722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2220331199 and 2220331208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2220331831) 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, 140751 + ... + 155728.

It is an arithmetic number, because the mean of its divisors is an integer number (555158800).

Almost surely, 2^2220331231 is an apocalyptic number.

2220331231 is a deficient number, since it is larger than the sum of its proper divisors (303969).

2220331231 is an equidigital number, since it uses as much as digits as its factorization.

2220331231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 303968.

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

The square root of 2220331231 is about 47120.3908196865. The cubic root of 2220331231 is about 1304.5856263304.

Adding to 2220331231 its reverse (1321330222), we get a palindrome (3541661453).

The spelling of 2220331231 in words is "two billion, two hundred twenty million, three hundred thirty-one thousand, two hundred thirty-one".