2131321230320 has 40 divisors (see below), whose sum is σ = 5015024549136. Its totient is φ = 842257061888.

The previous prime is 2131321230289. The next prime is 2131321230323. The reversal of 2131321230320 is 230321231312.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2131321230323) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 160484417 + ... + 160497696.

Almost surely, 2^{2131321230320} is an apocalyptic number.

2131321230320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2131321230320 is an abundant number, since it is smaller than the sum of its proper divisors (2883703318816).

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

2131321230320 is a wasteful number, since it uses less digits than its factorization.

2131321230320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 320982209 (or 320982203 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 2131321230320 its reverse (230321231312), we get a palindrome (2361642461632).

The spelling of 2131321230320 in words is "two trillion, one hundred thirty-one billion, three hundred twenty-one million, two hundred thirty thousand, three hundred twenty".