2220231031 has 4 divisors (see below), whose sum is σ = 2220854272. Its totient is φ = 2219607792.

The previous prime is 2220231029. The next prime is 2220231037. The reversal of 2220231031 is 1301320222.

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 2220231031 - 2¹ = 2220231029 is a prime.

It is a super-3 number, since 3×2220231031³ (a number of 29 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2220230996 and 2220231014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2220231037) 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, 306246 + ... + 313411.

It is an arithmetic number, because the mean of its divisors is an integer number (555213568).

Almost surely, 2^2220231031 is an apocalyptic number.

2220231031 is a deficient number, since it is larger than the sum of its proper divisors (623241).

2220231031 is an equidigital number, since it uses as much as digits as its factorization.

2220231031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 623240.

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

The square root of 2220231031 is about 47119.3275737250. The cubic root of 2220231031 is about 1304.5660014137.

Adding to 2220231031 its reverse (1301320222), we get a palindrome (3521551253).

The spelling of 2220231031 in words is "two billion, two hundred twenty million, two hundred thirty-one thousand, thirty-one".