2131343320 has 32 divisors (see below), whose sum is σ = 4863071520. Its totient is φ = 840528640.

The previous prime is 2131343311. The next prime is 2131343339. The reversal of 2131343320 is 233431312.

It is a junction number, because it is equal to n+sod(n) for n = 2131343291 and 2131343300.

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 7 ways as a sum of consecutive naturals, for example, 372397 + ... + 378076.

It is an arithmetic number, because the mean of its divisors is an integer number (151970985).

Almost surely, 2^2131343320 is an apocalyptic number.

2131343320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2131343320 is an abundant number, since it is smaller than the sum of its proper divisors (2731728200).

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

2131343320 is a wasteful number, since it uses less digits than its factorization.

2131343320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 750555 (or 750551 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 22.

The square root of 2131343320 is about 46166.4739827507. The cubic root of 2131343320 is about 1286.9187764579.

Adding to 2131343320 its reverse (233431312), we get a palindrome (2364774632).

The spelling of 2131343320 in words is "two billion, one hundred thirty-one million, three hundred forty-three thousand, three hundred twenty".