131263181323 has 4 divisors (see below), whose sum is σ = 131263906840. Its totient is φ = 131262455808.

The previous prime is 131263181311. The next prime is 131263181327. The reversal of 131263181323 is 323181362131.

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: 323181362131 = 73 ⋅4427141947.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131263181323 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131263181327) 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, 154123 + ... + 535051.

It is an arithmetic number, because the mean of its divisors is an integer number (32815976710).

Almost surely, 2^131263181323 is an apocalyptic number.

131263181323 is a deficient number, since it is larger than the sum of its proper divisors (725517).

131263181323 is an equidigital number, since it uses as much as digits as its factorization.

131263181323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 725516.

The product of its digits is 15552, while the sum is 34.

The spelling of 131263181323 in words is "one hundred thirty-one billion, two hundred sixty-three million, one hundred eighty-one thousand, three hundred twenty-three".