2123331320 has 64 divisors (see below), whose sum is σ = 5486140800. Its totient is φ = 731479680.

The previous prime is 2123331317. The next prime is 2123331323. The reversal of 2123331320 is 231333212.

It is an interprime number because it is at equal distance from previous prime (2123331317) and next prime (2123331323).

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 = 2123331292 and 2123331301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2123331323) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 118634 + ... + 135353.

It is an arithmetic number, because the mean of its divisors is an integer number (85720950).

Almost surely, 2^2123331320 is an apocalyptic number.

2123331320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2123331320 is an abundant number, since it is smaller than the sum of its proper divisors (3362809480).

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

2123331320 is a wasteful number, since it uses less digits than its factorization.

2123331320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 254028 (or 254024 counting only the distinct ones).

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

The square root of 2123331320 is about 46079.6193560667. The cubic root of 2123331320 is about 1285.3041859372.

Adding to 2123331320 its reverse (231333212), we get a palindrome (2354664532).

The spelling of 2123331320 in words is "two billion, one hundred twenty-three million, three hundred thirty-one thousand, three hundred twenty".