2131232321013 has 4 divisors (see below), whose sum is σ = 2841643094688. Its totient is φ = 1420821547340.

The previous prime is 2131232321011. The next prime is 2131232321069. The reversal of 2131232321013 is 3101232321312.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2131232321013 - 2¹ = 2131232321011 is a prime.

It is a super-2 number, since 2×2131232321013² (a number of 25 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2131232321011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 355205386833 + ... + 355205386838.

It is an arithmetic number, because the mean of its divisors is an integer number (710410773672).

Almost surely, 2^{2131232321013} is an apocalyptic number.

It is an amenable number.

2131232321013 is a deficient number, since it is larger than the sum of its proper divisors (710410773675).

2131232321013 is an equidigital number, since it uses as much as digits as its factorization.

2131232321013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 710410773674.

The product of its (nonzero) digits is 1296, while the sum is 24.

Adding to 2131232321013 its reverse (3101232321312), we get a palindrome (5232464642325).

The spelling of 2131232321013 in words is "two trillion, one hundred thirty-one billion, two hundred thirty-two million, three hundred twenty-one thousand, thirteen".