2231331320 has 16 divisors (see below), whose sum is σ = 5020495560. Its totient is φ = 892532512.

The previous prime is 2231331317. The next prime is 2231331341. The reversal of 2231331320 is 231331322.

It is a super-3 number, since 3×2231331320³ (a number of 29 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 2231331292 and 2231331301.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27891602 + ... + 27891681.

Almost surely, 2^2231331320 is an apocalyptic number.

2231331320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2231331320 is an abundant number, since it is smaller than the sum of its proper divisors (2789164240).

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

2231331320 is a wasteful number, since it uses less digits than its factorization.

2231331320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55783294 (or 55783290 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 20.

The square root of 2231331320 is about 47236.9698435452. The cubic root of 2231331320 is about 1306.7364952386.

Adding to 2231331320 its reverse (231331322), we get a palindrome (2462662642).

The spelling of 2231331320 in words is "two billion, two hundred thirty-one million, three hundred thirty-one thousand, three hundred twenty".