131526018 has 120 divisors (see below), whose sum is σ = 336906108. Its totient is φ = 38117952.

The previous prime is 131526001. The next prime is 131526023. The reversal of 131526018 is 810625131.

131526018 is a `hidden beast` number, since 1 + 3 + 1 + 52 + 601 + 8 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 131262849 + 263169 = 11457^2 + 513^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 131525982 and 131526000.

It is an unprimeable number.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 760180 + ... + 760352.

Almost surely, 2^131526018 is an apocalyptic number.

131526018 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 131526018, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (168453054).

131526018 is an abundant number, since it is smaller than the sum of its proper divisors (205380090).

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

131526018 is a wasteful number, since it uses less digits than its factorization.

131526018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 238 (or 210 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The square root of 131526018 is about 11468.4793237813. The cubic root of 131526018 is about 508.5541749261.

The spelling of 131526018 in words is "one hundred thirty-one million, five hundred twenty-six thousand, eighteen".