131143112123 has 4 divisors (see below), whose sum is σ = 131143836768. Its totient is φ = 131142387480.

The previous prime is 131143112117. The next prime is 131143112171. The reversal of 131143112123 is 321211341131.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 321211341131 = 193 ⋅1664307467.

It is a cyclic number.

It is not a de Polignac number, because 131143112123 - 2¹⁸ = 131142849979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131143112423) 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, 163790 + ... + 537692.

It is an arithmetic number, because the mean of its divisors is an integer number (32785959192).

Almost surely, 2^131143112123 is an apocalyptic number.

131143112123 is a deficient number, since it is larger than the sum of its proper divisors (724645).

131143112123 is an equidigital number, since it uses as much as digits as its factorization.

131143112123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 724644.

The product of its digits is 432, while the sum is 23.

Adding to 131143112123 its reverse (321211341131), we get a palindrome (452354453254).

The spelling of 131143112123 in words is "one hundred thirty-one billion, one hundred forty-three million, one hundred twelve thousand, one hundred twenty-three".