131535286881 has 16 divisors (see below), whose sum is σ = 176573779200. Its totient is φ = 87095339408.

The previous prime is 131535286877. The next prime is 131535286913. The reversal of 131535286881 is 188682535131.

It is a cyclic number.

It is not a de Polignac number, because 131535286881 - 2² = 131535286877 is a prime.

It is a super-2 number, since 2×131535286881² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (131535286811) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54850 + ... + 515828.

It is an arithmetic number, because the mean of its divisors is an integer number (11035861200).

Almost surely, 2^131535286881 is an apocalyptic number.

It is an amenable number.

131535286881 is a deficient number, since it is larger than the sum of its proper divisors (45038492319).

131535286881 is a wasteful number, since it uses less digits than its factorization.

131535286881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 461628.

The product of its digits is 1382400, while the sum is 51.

The spelling of 131535286881 in words is "one hundred thirty-one billion, five hundred thirty-five million, two hundred eighty-six thousand, eight hundred eighty-one".