2231320020 has 48 divisors (see below), whose sum is σ = 6256958400. Its totient is φ = 594136576.

The previous prime is 2231320019. The next prime is 2231320033. The reversal of 2231320020 is 200231322.

It is a super-3 number, since 3×2231320020³ (a number of 29 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

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 15 ways as a sum of consecutive naturals, for example, 13756 + ... + 68204.

It is an arithmetic number, because the mean of its divisors is an integer number (130353300).

Almost surely, 2^2231320020 is an apocalyptic number.

2231320020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2231320020 is an abundant number, since it is smaller than the sum of its proper divisors (4025638380).

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

2231320020 is a wasteful number, since it uses less digits than its factorization.

2231320020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55144 (or 55142 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 2231320020 is about 47236.8502336894. The cubic root of 2231320020 is about 1306.7342893586.

Adding to 2231320020 its reverse (200231322), we get a palindrome (2431551342).

The spelling of 2231320020 in words is "two billion, two hundred thirty-one million, three hundred twenty thousand, twenty".