131311085526 has 16 divisors (see below), whose sum is σ = 291802412400. Its totient is φ = 43770361824.

The previous prime is 131311085491. The next prime is 131311085593. The reversal of 131311085526 is 625580113131.

It is a happy number.

131311085526 is a `hidden beast` number, since 1 + 3 + 13 + 110 + 8 + 5 + 526 = 666.

It is a super-3 number, since 3×131311085526³ (a number of 34 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1215843331 + ... + 1215843438.

It is an arithmetic number, because the mean of its divisors is an integer number (18237650775).

Almost surely, 2^131311085526 is an apocalyptic number.

131311085526 is an abundant number, since it is smaller than the sum of its proper divisors (160491326874).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

131311085526 is a wasteful number, since it uses less digits than its factorization.

131311085526 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2431686780 (or 2431686774 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 36.

Adding to 131311085526 its reverse (625580113131), we get a palindrome (756891198657).

The spelling of 131311085526 in words is "one hundred thirty-one billion, three hundred eleven million, eighty-five thousand, five hundred twenty-six".