131312313133 has 4 divisors (see below), whose sum is σ = 132037795708. Its totient is φ = 130586830560.

The previous prime is 131312313127. The next prime is 131312313137. The reversal of 131312313133 is 331313213131.

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

It can be written as a sum of positive squares in 2 ways, for example, as 70669310569 + 60643002564 = 265837^2 + 246258^2 .

It is a cyclic number.

It is not a de Polignac number, because 131312313133 - 2⁵ = 131312313101 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 131312313098 and 131312313107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131312313137) 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, 362741016 + ... + 362741377.

It is an arithmetic number, because the mean of its divisors is an integer number (33009448927).

Almost surely, 2^131312313133 is an apocalyptic number.

It is an amenable number.

131312313133 is a deficient number, since it is larger than the sum of its proper divisors (725482575).

131312313133 is an equidigital number, since it uses as much as digits as its factorization.

131312313133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 725482574.

The product of its digits is 1458, while the sum is 25.

Adding to 131312313133 its reverse (331313213131), we get a palindrome (462625526264).

The spelling of 131312313133 in words is "one hundred thirty-one billion, three hundred twelve million, three hundred thirteen thousand, one hundred thirty-three".