131321312211 has 4 divisors (see below), whose sum is σ = 175095082952. Its totient is φ = 87547541472.

The previous prime is 131321312201. The next prime is 131321312257. The reversal of 131321312211 is 112213123131.

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

It is not a de Polignac number, because 131321312211 - 2¹⁴ = 131321295827 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131321312201) 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, 21886885366 + ... + 21886885371.

It is an arithmetic number, because the mean of its divisors is an integer number (43773770738).

Almost surely, 2^131321312211 is an apocalyptic number.

131321312211 is a deficient number, since it is larger than the sum of its proper divisors (43773770741).

131321312211 is an equidigital number, since it uses as much as digits as its factorization.

131321312211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43773770740.

The product of its digits is 216, while the sum is 21.

Adding to 131321312211 its reverse (112213123131), we get a palindrome (243534435342).

The spelling of 131321312211 in words is "one hundred thirty-one billion, three hundred twenty-one million, three hundred twelve thousand, two hundred eleven".