2220123231 has 24 divisors (see below), whose sum is σ = 3392135136. Its totient is φ = 1396327680.

The previous prime is 2220123181. The next prime is 2220123263. The reversal of 2220123231 is 1323210222.

It is not a de Polignac number, because 2220123231 - 2²¹ = 2218026079 is a prime.

It is a super-2 number, since 2×2220123231² = 9857894321651758722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2220123281) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 58350 + ... + 88571.

It is an arithmetic number, because the mean of its divisors is an integer number (141338964).

Almost surely, 2^2220123231 is an apocalyptic number.

2220123231 is a deficient number, since it is larger than the sum of its proper divisors (1172011905).

2220123231 is a wasteful number, since it uses less digits than its factorization.

2220123231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147023 (or 147020 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 2220123231 is about 47118.1836555697. The cubic root of 2220123231 is about 1304.5448873211.

Adding to 2220123231 its reverse (1323210222), we get a palindrome (3543333453).

The spelling of 2220123231 in words is "two billion, two hundred twenty million, one hundred twenty-three thousand, two hundred thirty-one".