2231211233131 has 4 divisors (see below), whose sum is σ = 2238479022472. Its totient is φ = 2223943443792.

The previous prime is 2231211233113. The next prime is 2231211233203. The reversal of 2231211233131 is 1313321121322.

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 2231211233131 - 2⁴¹ = 32187977579 is a prime.

It is a super-3 number, since 3×2231211233131³ (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 = 2231211233096 and 2231211233105.

It is not an unprimeable number, because it can be changed into a prime (2231211236131) 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, 3633894210 + ... + 3633894823.

It is an arithmetic number, because the mean of its divisors is an integer number (559619755618).

Almost surely, 2^{2231211233131} is an apocalyptic number.

2231211233131 is a deficient number, since it is larger than the sum of its proper divisors (7267789341).

2231211233131 is an equidigital number, since it uses as much as digits as its factorization.

2231211233131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7267789340.

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

Adding to 2231211233131 its reverse (1313321121322), we get a palindrome (3544532354453).

The spelling of 2231211233131 in words is "two trillion, two hundred thirty-one billion, two hundred eleven million, two hundred thirty-three thousand, one hundred thirty-one".