2131203012331 has 4 divisors (see below), whose sum is σ = 2131208440200. Its totient is φ = 2131197584464.

The previous prime is 2131203012311. The next prime is 2131203012371. The reversal of 2131203012331 is 1332103021312.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2131203012331 - 2⁵ = 2131203012299 is a prime.

It is a super-2 number, since 2×2131203012331² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2131203012311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2074801 + ... + 2926978.

It is an arithmetic number, because the mean of its divisors is an integer number (532802110050).

Almost surely, 2^{2131203012331} is an apocalyptic number.

2131203012331 is a deficient number, since it is larger than the sum of its proper divisors (5427869).

2131203012331 is an equidigital number, since it uses as much as digits as its factorization.

2131203012331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5427868.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 2131203012331 its reverse (1332103021312), we get a palindrome (3463306033643).

The spelling of 2131203012331 in words is "two trillion, one hundred thirty-one billion, two hundred three million, twelve thousand, three hundred thirty-one".