131311085532 has 96 divisors (see below), whose sum is σ = 336262752000. Its totient is φ = 39551877120.

The previous prime is 131311085491. The next prime is 131311085593. The reversal of 131311085532 is 235580113131.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a junction number, because it is equal to n+sod(n) for n = 131311085493 and 131311085502.

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, 16924198 + ... + 16931954.

It is an arithmetic number, because the mean of its divisors is an integer number (3502737000).

Almost surely, 2^131311085532 is an apocalyptic number.

131311085532 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 131311085532, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (168131376000).

131311085532 is an abundant number, since it is smaller than the sum of its proper divisors (204951666468).

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

131311085532 is a wasteful number, since it uses less digits than its factorization.

131311085532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8531 (or 8529 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 33.

Adding to 131311085532 its reverse (235580113131), we get a palindrome (366891198663).

The spelling of 131311085532 in words is "one hundred thirty-one billion, three hundred eleven million, eighty-five thousand, five hundred thirty-two".