2231231320 has 128 divisors (see below), whose sum is σ = 5270054400. Its totient is φ = 849632256.

The previous prime is 2231231309. The next prime is 2231231339. The reversal of 2231231320 is 231321322.

It is a super-3 number, since 3×2231231320³ (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 31 ways as a sum of consecutive naturals, for example, 16286292 + ... + 16286428.

It is an arithmetic number, because the mean of its divisors is an integer number (41172300).

Almost surely, 2^2231231320 is an apocalyptic number.

2231231320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2231231320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2635027200).

2231231320 is an abundant number, since it is smaller than the sum of its proper divisors (3038823080).

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

2231231320 is a wasteful number, since it uses less digits than its factorization.

2231231320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 377 (or 373 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 2231231320 is about 47235.9113387262. The cubic root of 2231231320 is about 1306.7169739181.

Adding to 2231231320 its reverse (231321322), we get a palindrome (2462552642).

The spelling of 2231231320 in words is "two billion, two hundred thirty-one million, two hundred thirty-one thousand, three hundred twenty".