131536215 has 24 divisors (see below), whose sum is σ = 230564880. Its totient is φ = 69362304.

The previous prime is 131536201. The next prime is 131536217. The reversal of 131536215 is 512635131.

131536215 is a `hidden beast` number, since 1 + 31 + 5 + 3 + 621 + 5 = 666.

It is not a de Polignac number, because 131536215 - 2⁶ = 131536151 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131536217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12417 + ... + 20426.

It is an arithmetic number, because the mean of its divisors is an integer number (9606870).

Almost surely, 2^131536215 is an apocalyptic number.

131536215 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

131536215 is a deficient number, since it is larger than the sum of its proper divisors (99028665).

131536215 is a wasteful number, since it uses less digits than its factorization.

131536215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32943 (or 32940 counting only the distinct ones).

The product of its digits is 2700, while the sum is 27.

The square root of 131536215 is about 11468.9238815156. The cubic root of 131536215 is about 508.5673170481.

The spelling of 131536215 in words is "one hundred thirty-one million, five hundred thirty-six thousand, two hundred fifteen".