2231000131211 has 2 divisors, whose sum is σ = 2231000131212. Its totient is φ = 2231000131210.

The previous prime is 2231000131201. The next prime is 2231000131237. The reversal of 2231000131211 is 1121310001322.

2231000131211 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2231000131211 - 2³⁰ = 2229926389387 is a prime.

It is a super-4 number, since 4×2231000131211⁴ (a number of 50 digits) contains 4444 as substring. Note that it is a super-d number also for d = 3.

It is a self number, because there is not a number n which added to its sum of digits gives 2231000131211.

It is not a weakly prime, because it can be changed into another prime (2231000131201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1115500065605 + 1115500065606.

It is an arithmetic number, because the mean of its divisors is an integer number (1115500065606).

Almost surely, 2^{2231000131211} is an apocalyptic number.

2231000131211 is a deficient number, since it is larger than the sum of its proper divisors (1).

2231000131211 is an equidigital number, since it uses as much as digits as its factorization.

2231000131211 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 2231000131211 its reverse (1121310001322), we get a palindrome (3352310132533).

The spelling of 2231000131211 in words is "two trillion, two hundred thirty-one billion, one hundred thirty-one thousand, two hundred eleven".