131500065 has 16 divisors (see below), whose sum is σ = 217656000. Its totient is φ = 67714752.

The previous prime is 131500051. The next prime is 131500093. The reversal of 131500065 is 560005131.

It is a happy number.

It is not a de Polignac number, because 131500065 - 2¹³ = 131491873 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 150715 + ... + 151584.

It is an arithmetic number, because the mean of its divisors is an integer number (13603500).

Almost surely, 2^131500065 is an apocalyptic number.

131500065 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

131500065 is a deficient number, since it is larger than the sum of its proper divisors (86155935).

131500065 is a wasteful number, since it uses less digits than its factorization.

131500065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 302336.

The product of its (nonzero) digits is 450, while the sum is 21.

The square root of 131500065 is about 11467.3477753140. The cubic root of 131500065 is about 508.5207230537.

Adding to 131500065 its reverse (560005131), we get a palindrome (691505196).

The spelling of 131500065 in words is "one hundred thirty-one million, five hundred thousand, sixty-five".