2220431312 has 30 divisors (see below), whose sum is σ = 4728742914. Its totient is φ = 1009286080.

The previous prime is 2220431287. The next prime is 2220431401. The reversal of 2220431312 is 2131340222.

It can be written as a sum of positive squares in only one way, i.e., 1901308816 + 319122496 = 43604^2 + 17864^2 .

It is a super-2 number, since 2×2220431312² = 9860630422620082688, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 571523 + ... + 575394.

Almost surely, 2^2220431312 is an apocalyptic number.

2220431312 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

2220431312 is an abundant number, since it is smaller than the sum of its proper divisors (2508311602).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2220431312 is a wasteful number, since it uses less digits than its factorization.

2220431312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1146947 (or 1146930 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 2220431312 is about 47121.4527789626. The cubic root of 2220431312 is about 1304.6052273507.

Adding to 2220431312 its reverse (2131340222), we get a palindrome (4351771534).

The spelling of 2220431312 in words is "two billion, two hundred twenty million, four hundred thirty-one thousand, three hundred twelve".