131312134123 has 4 divisors (see below), whose sum is σ = 134365904728. Its totient is φ = 128258363520.

The previous prime is 131312134117. The next prime is 131312134153. The reversal of 131312134123 is 321431213131.

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

It is not a de Polignac number, because 131312134123 - 2⁵ = 131312134091 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131312134153) 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, 1526885238 + ... + 1526885323.

It is an arithmetic number, because the mean of its divisors is an integer number (33591476182).

Almost surely, 2^131312134123 is an apocalyptic number.

131312134123 is a deficient number, since it is larger than the sum of its proper divisors (3053770605).

131312134123 is an equidigital number, since it uses as much as digits as its factorization.

131312134123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3053770604.

The product of its digits is 1296, while the sum is 25.

Adding to 131312134123 its reverse (321431213131), we get a palindrome (452743347254).

The spelling of 131312134123 in words is "one hundred thirty-one billion, three hundred twelve million, one hundred thirty-four thousand, one hundred twenty-three".