65716131 has 16 divisors (see below), whose sum is σ = 96145056. Its totient is φ = 39676416.

The previous prime is 65716127. The next prime is 65716151. The reversal of 65716131 is 13161756.

It is not a de Polignac number, because 65716131 - 2² = 65716127 is a prime.

It is a super-2 number, since 2×65716131² = 8637219747218322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (65716111) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13830 + ... + 17963.

It is an arithmetic number, because the mean of its divisors is an integer number (6009066).

Almost surely, 2^65716131 is an apocalyptic number.

65716131 is a deficient number, since it is larger than the sum of its proper divisors (30428925).

65716131 is a wasteful number, since it uses less digits than its factorization.

65716131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31862.

The product of its digits is 3780, while the sum is 30.

The square root of 65716131 is about 8106.5486490861. The cubic root of 65716131 is about 403.5437841836.

Adding to 65716131 its reverse (13161756), we get a palindrome (78877887).

The spelling of 65716131 in words is "sixty-five million, seven hundred sixteen thousand, one hundred thirty-one".