131324135125 has 32 divisors (see below), whose sum is σ = 173599511904.
Its totient is φ = 98841600000.
The previous prime is 131324135119. The next prime is 131324135233. The reversal of 131324135125 is 521531423131.
Adding to 131324135125 its reverse (521531423131), we get a palindrome (652855558256).
It can be written as a sum of positive squares in 16 ways, for example, as 32714318641 + 98609816484 = 180871^2 + 314022^2
It is not a de Polignac number, because 131324135125 - 213 = 131324126933 is a prime.
It is a Duffinian number.
It is a congruent number.
It is an unprimeable number.
It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6366829 + ... + 6387421.
It is an arithmetic number, because the mean of its divisors is an integer number (5424984747).
Almost surely, 2131324135125 is an apocalyptic number.
It is an amenable number.
131324135125 is a deficient number, since it is larger than the sum of its proper divisors (42275376779).
131324135125 is a wasteful number, since it uses less digits than its factorization.
131324135125 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 23626 (or 23616 counting only the distinct ones).
The product of its digits is 10800, while the sum is 31.
The spelling of 131324135125 in words is "one hundred thirty-one billion, three hundred twenty-four million, one hundred thirty-five thousand, one hundred twenty-five".