131321332123 has 4 divisors (see below), whose sum is σ = 131322395320. Its totient is φ = 131320268928.

The previous prime is 131321332111. The next prime is 131321332139. The reversal of 131321332123 is 321233123131.

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.

It is a cyclic number.

It is not a de Polignac number, because 131321332123 - 2⁵ = 131321332091 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131321332223) 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, 317613 + ... + 602926.

It is an arithmetic number, because the mean of its divisors is an integer number (32830598830).

Almost surely, 2^131321332123 is an apocalyptic number.

131321332123 is a deficient number, since it is larger than the sum of its proper divisors (1063197).

131321332123 is an equidigital number, since it uses as much as digits as its factorization.

131321332123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1063196.

The product of its digits is 1944, while the sum is 25.

Adding to 131321332123 its reverse (321233123131), we get a palindrome (452554455254).

The spelling of 131321332123 in words is "one hundred thirty-one billion, three hundred twenty-one million, three hundred thirty-two thousand, one hundred twenty-three".