131100442013 has 4 divisors (see below), whose sum is σ = 135621146940. Its totient is φ = 126579737088.

The previous prime is 131100442001. The next prime is 131100442097. The reversal of 131100442013 is 310244001131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 310244001131 = 22907 ⋅13543633.

It can be written as a sum of positive squares in 2 ways, for example, as 65358456409 + 65741985604 = 255653^2 + 256402^2 .

It is a cyclic number.

It is not a de Polignac number, because 131100442013 - 2⁶ = 131100441949 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131100442513) 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, 2260352420 + ... + 2260352477.

It is an arithmetic number, because the mean of its divisors is an integer number (33905286735).

Almost surely, 2^131100442013 is an apocalyptic number.

It is an amenable number.

131100442013 is a deficient number, since it is larger than the sum of its proper divisors (4520704927).

131100442013 is an equidigital number, since it uses as much as digits as its factorization.

131100442013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4520704926.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 131100442013 its reverse (310244001131), we get a palindrome (441344443144).

The spelling of 131100442013 in words is "one hundred thirty-one billion, one hundred million, four hundred forty-two thousand, thirteen".