2231121323131 has 12 divisors (see below), whose sum is σ = 2321475929280. Its totient is φ = 2141733329120.

The previous prime is 2231121323087. The next prime is 2231121323149. The reversal of 2231121323131 is 1313231211322.

2231121323131 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2231121323131 - 2¹¹ = 2231121321083 is a prime.

It is a super-3 number, since 3×2231121323131³ (a number of 38 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2231121323096 and 2231121323105.

It is not an unprimeable number, because it can be changed into a prime (2231121323161) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 417355 + ... + 2153236.

It is an arithmetic number, because the mean of its divisors is an integer number (193456327440).

Almost surely, 2^{2231121323131} is an apocalyptic number.

2231121323131 is a deficient number, since it is larger than the sum of its proper divisors (90354606149).

2231121323131 is an equidigital number, since it uses as much as digits as its factorization.

2231121323131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2570966 (or 2570793 counting only the distinct ones).

The product of its digits is 1296, while the sum is 25.

Adding to 2231121323131 its reverse (1313231211322), we get a palindrome (3544352534453).

The spelling of 2231121323131 in words is "two trillion, two hundred thirty-one billion, one hundred twenty-one million, three hundred twenty-three thousand, one hundred thirty-one".