131210065 has 32 divisors (see below), whose sum is σ = 187246080. Its totient is φ = 86360064.

The previous prime is 131210021. The next prime is 131210083. The reversal of 131210065 is 560012131.

It is not a de Polignac number, because 131210065 - 2¹¹ = 131208017 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 260604 + ... + 261106.

It is an arithmetic number, because the mean of its divisors is an integer number (5851440).

Almost surely, 2^131210065 is an apocalyptic number.

It is an amenable number.

131210065 is a deficient number, since it is larger than the sum of its proper divisors (56036015).

131210065 is a wasteful number, since it uses less digits than its factorization.

131210065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 801.

The product of its (nonzero) digits is 180, while the sum is 19.

The square root of 131210065 is about 11454.6961985030. The cubic root of 131210065 is about 508.1466305904.

Adding to 131210065 its reverse (560012131), we get a palindrome (691222196).

The spelling of 131210065 in words is "one hundred thirty-one million, two hundred ten thousand, sixty-five".