131321442011 has 4 divisors (see below), whose sum is σ = 131372802192. Its totient is φ = 131270081832.

The previous prime is 131321441981. The next prime is 131321442037. The reversal of 131321442011 is 110244123131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 110244123131 = 43 ⋅2563816817.

It is a cyclic number.

It is not a de Polignac number, because 131321442011 - 2¹⁸ = 131321179867 is a prime.

It is a super-2 number, since 2×131321442011² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131321442211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25676255 + ... + 25681368.

It is an arithmetic number, because the mean of its divisors is an integer number (32843200548).

Almost surely, 2^131321442011 is an apocalyptic number.

131321442011 is a deficient number, since it is larger than the sum of its proper divisors (51360181).

131321442011 is an equidigital number, since it uses as much as digits as its factorization.

131321442011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51360180.

The product of its (nonzero) digits is 576, while the sum is 23.

Adding to 131321442011 its reverse (110244123131), we get a palindrome (241565565142).

The spelling of 131321442011 in words is "one hundred thirty-one billion, three hundred twenty-one million, four hundred forty-two thousand, eleven".