131535336231 has 36 divisors (see below), whose sum is σ = 205902450000. Its totient is φ = 80878846464.

The previous prime is 131535336193. The next prime is 131535336259. The reversal of 131535336231 is 132633535131.

131535336231 is a `hidden beast` number, since 1 + 3 + 1 + 535 + 33 + 62 + 31 = 666.

It is not a de Polignac number, because 131535336231 - 2²⁵ = 131501781799 is a prime.

It is a super-2 number, since 2×131535336231² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131535336271) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1865110 + ... + 1934348.

It is an arithmetic number, because the mean of its divisors is an integer number (5719512500).

Almost surely, 2^131535336231 is an apocalyptic number.

131535336231 is a deficient number, since it is larger than the sum of its proper divisors (74367113769).

131535336231 is a wasteful number, since it uses less digits than its factorization.

131535336231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70520 (or 70504 counting only the distinct ones).

The product of its digits is 72900, while the sum is 36.

The spelling of 131535336231 in words is "one hundred thirty-one billion, five hundred thirty-five million, three hundred thirty-six thousand, two hundred thirty-one".