2231322420 has 48 divisors (see below), whose sum is σ = 6615217728. Its totient is φ = 560017920.

The previous prime is 2231322413. The next prime is 2231322439. The reversal of 2231322420 is 242231322.

It is a super-3 number, since 3×2231322420³ (a number of 29 digits) contains 333 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 (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1092766 + ... + 1094805.

It is an arithmetic number, because the mean of its divisors is an integer number (137817036).

Almost surely, 2^2231322420 is an apocalyptic number.

2231322420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2231322420 is an abundant number, since it is smaller than the sum of its proper divisors (4383895308).

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

2231322420 is a wasteful number, since it uses less digits than its factorization.

2231322420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2187600 (or 2187598 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 2231322420 is about 47236.8756375779. The cubic root of 2231322420 is about 1306.7347578647.

Adding to 2231322420 its reverse (242231322), we get a palindrome (2473553742).

The spelling of 2231322420 in words is "two billion, two hundred thirty-one million, three hundred twenty-two thousand, four hundred twenty".