2220131311 has 4 divisors (see below), whose sum is σ = 2221619832. Its totient is φ = 2218642792.

The previous prime is 2220131297. The next prime is 2220131341. The reversal of 2220131311 is 1131310222.

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 2220131311 - 2⁷ = 2220131183 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2220131341) 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, 742021 + ... + 745006.

It is an arithmetic number, because the mean of its divisors is an integer number (555404958).

Almost surely, 2^2220131311 is an apocalyptic number.

2220131311 is a deficient number, since it is larger than the sum of its proper divisors (1488521).

2220131311 is a wasteful number, since it uses less digits than its factorization.

2220131311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1488520.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 2220131311 is about 47118.2693973367. The cubic root of 2220131311 is about 1304.5464699224.

Adding to 2220131311 its reverse (1131310222), we get a palindrome (3351441533).

The spelling of 2220131311 in words is "two billion, two hundred twenty million, one hundred thirty-one thousand, three hundred eleven".