2131203120 has 80 divisors (see below), whose sum is σ = 6636003840. Its totient is φ = 565802752.

The previous prime is 2131203091. The next prime is 2131203149. The reversal of 2131203120 is 213021312.

It is an interprime number because it is at equal distance from previous prime (2131203091) and next prime (2131203149).

It is a tau number, because it is divible by the number of its divisors (80).

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

It is a self number, because there is not a number n which added to its sum of digits gives 2131203120.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34921 + ... + 74039.

It is an arithmetic number, because the mean of its divisors is an integer number (82950048).

Almost surely, 2^2131203120 is an apocalyptic number.

2131203120 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 2131203120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3318001920).

2131203120 is an abundant number, since it is smaller than the sum of its proper divisors (4504800720).

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

2131203120 is a wasteful number, since it uses less digits than its factorization.

2131203120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39362 (or 39356 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 2131203120 is about 46164.9555398898. The cubic root of 2131203120 is about 1286.8905579526.

Adding to 2131203120 its reverse (213021312), we get a palindrome (2344224432).

The spelling of 2131203120 in words is "two billion, one hundred thirty-one million, two hundred three thousand, one hundred twenty".