131325412531 has 4 divisors (see below), whose sum is σ = 131326137712. Its totient is φ = 131324687352.

The previous prime is 131325412367. The next prime is 131325412541. The reversal of 131325412531 is 135214523131.

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 131325412531 - 2¹¹ = 131325410483 is a prime.

It is a super-2 number, since 2×131325412531² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 131325412493 and 131325412502.

It is not an unprimeable number, because it can be changed into a prime (131325412541) 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, 163165 + ... + 537841.

It is an arithmetic number, because the mean of its divisors is an integer number (32831534428).

Almost surely, 2^131325412531 is an apocalyptic number.

131325412531 is a deficient number, since it is larger than the sum of its proper divisors (725181).

131325412531 is an equidigital number, since it uses as much as digits as its factorization.

131325412531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 725180.

The product of its digits is 10800, while the sum is 31.

Adding to 131325412531 its reverse (135214523131), we get a palindrome (266539935662).

The spelling of 131325412531 in words is "one hundred thirty-one billion, three hundred twenty-five million, four hundred twelve thousand, five hundred thirty-one".