131313113103121 has 4 divisors (see below), whose sum is σ = 131534551743012. Its totient is φ = 131091674463232.

The previous prime is 131313113103059. The next prime is 131313113103157. The reversal of 131313113103121 is 121301311313131.

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

It can be written as a sum of positive squares in 2 ways, for example, as 81349576360000 + 49963536743121 = 9019400^2 + 7068489^2 .

It is a cyclic number.

It is not a de Polignac number, because 131313113103121 - 2⁹ = 131313113102609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131313113103181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 110719319056 + ... + 110719320241.

It is an arithmetic number, because the mean of its divisors is an integer number (32883637935753).

Almost surely, 2^{131313113103121} is an apocalyptic number.

It is an amenable number.

131313113103121 is a deficient number, since it is larger than the sum of its proper divisors (221438639891).

131313113103121 is an equidigital number, since it uses as much as digits as its factorization.

131313113103121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221438639890.

The product of its (nonzero) digits is 486, while the sum is 25.

Adding to 131313113103121 its reverse (121301311313131), we get a palindrome (252614424416252).

The spelling of 131313113103121 in words is "one hundred thirty-one trillion, three hundred thirteen billion, one hundred thirteen million, one hundred three thousand, one hundred twenty-one".