131023121320211 has 4 divisors (see below), whose sum is σ = 131023503925392. Its totient is φ = 131022738715032.

The previous prime is 131023121320153. The next prime is 131023121320241. The reversal of 131023121320211 is 112023121320131.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131023121320211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131023121320241) 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, 190788455 + ... + 191473968.

It is an arithmetic number, because the mean of its divisors is an integer number (32755875981348).

Almost surely, 2^{131023121320211} is an apocalyptic number.

131023121320211 is a deficient number, since it is larger than the sum of its proper divisors (382605181).

131023121320211 is an equidigital number, since it uses as much as digits as its factorization.

131023121320211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 382605180.

The product of its (nonzero) digits is 432, while the sum is 23.

Adding to 131023121320211 its reverse (112023121320131), we get a palindrome (243046242640342).

The spelling of 131023121320211 in words is "one hundred thirty-one trillion, twenty-three billion, one hundred twenty-one million, three hundred twenty thousand, two hundred eleven".