131123132113 has 4 divisors (see below), whose sum is σ = 131188597488. Its totient is φ = 131057666740.

The previous prime is 131123132111. The next prime is 131123132117. The reversal of 131123132113 is 311231321131.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 311231321131 = 19 ⋅16380595849.

It is a cyclic number.

It is not a de Polignac number, because 131123132113 - 2¹ = 131123132111 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131123132111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32729683 + ... + 32733688.

It is an arithmetic number, because the mean of its divisors is an integer number (32797149372).

Almost surely, 2^131123132113 is an apocalyptic number.

It is an amenable number.

131123132113 is a deficient number, since it is larger than the sum of its proper divisors (65465375).

131123132113 is an equidigital number, since it uses as much as digits as its factorization.

131123132113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65465374.

The product of its digits is 324, while the sum is 22.

Adding to 131123132113 its reverse (311231321131), we get a palindrome (442354453244).

The spelling of 131123132113 in words is "one hundred thirty-one billion, one hundred twenty-three million, one hundred thirty-two thousand, one hundred thirteen".