131365518 has 8 divisors (see below), whose sum is σ = 262731048. Its totient is φ = 43788504.

The previous prime is 131365499. The next prime is 131365519. The reversal of 131365518 is 815563131.

It is a sphenic number, since it is the product of 3 distinct primes.

131365518 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131365519) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10947121 + ... + 10947132.

It is an arithmetic number, because the mean of its divisors is an integer number (32841381).

Almost surely, 2^131365518 is an apocalyptic number.

131365518 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

131365518 is a wasteful number, since it uses less digits than its factorization.

131365518 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21894258.

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

The square root of 131365518 is about 11461.4797473974. The cubic root of 131365518 is about 508.3472293851.

The spelling of 131365518 in words is "one hundred thirty-one million, three hundred sixty-five thousand, five hundred eighteen".