131244133123 has 4 divisors (see below), whose sum is σ = 131294789568. Its totient is φ = 131193476680.

The previous prime is 131244133099. The next prime is 131244133169. The reversal of 131244133123 is 321331442131.

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

It is a cyclic number.

It is not a de Polignac number, because 131244133123 - 2³³ = 122654198531 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 131244133091 and 131244133100.

It is not an unprimeable number, because it can be changed into a prime (131244136123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25324336 + ... + 25329517.

It is an arithmetic number, because the mean of its divisors is an integer number (32823697392).

Almost surely, 2^131244133123 is an apocalyptic number.

131244133123 is a deficient number, since it is larger than the sum of its proper divisors (50656445).

131244133123 is an equidigital number, since it uses as much as digits as its factorization.

131244133123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50656444.

The product of its digits is 5184, while the sum is 28.

Adding to 131244133123 its reverse (321331442131), we get a palindrome (452575575254).

The spelling of 131244133123 in words is "one hundred thirty-one billion, two hundred forty-four million, one hundred thirty-three thousand, one hundred twenty-three".