2231112211131 has 4 divisors (see below), whose sum is σ = 2974816281512. Its totient is φ = 1487408140752.

The previous prime is 2231112211033. The next prime is 2231112211201. The reversal of 2231112211131 is 1311122111322.

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

It is not a de Polignac number, because 2231112211131 - 2¹¹ = 2231112209083 is a prime.

It is a super-3 number, since 3×2231112211131³ (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 = 2231112211098 and 2231112211107.

It is not an unprimeable number, because it can be changed into a prime (2231112211231) 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, 371852035186 + ... + 371852035191.

It is an arithmetic number, because the mean of its divisors is an integer number (743704070378).

Almost surely, 2^{2231112211131} is an apocalyptic number.

2231112211131 is a deficient number, since it is larger than the sum of its proper divisors (743704070381).

2231112211131 is an equidigital number, since it uses as much as digits as its factorization.

2231112211131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 743704070380.

The product of its digits is 144, while the sum is 21.

Adding to 2231112211131 its reverse (1311122111322), we get a palindrome (3542234322453).

The spelling of 2231112211131 in words is "two trillion, two hundred thirty-one billion, one hundred twelve million, two hundred eleven thousand, one hundred thirty-one".