65135731 has 2 divisors, whose sum is σ = 65135732. Its totient is φ = 65135730.

The previous prime is 65135729. The next prime is 65135761. The reversal of 65135731 is 13753156.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 65135731 - 2¹ = 65135729 is a prime.

It is a super-2 number, since 2×65135731² = 8485326905808722, which contains 22 as substring.

Together with 65135729, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 65135693 and 65135702.

It is not a weakly prime, because it can be changed into another prime (65135761) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32567865 + 32567866.

It is an arithmetic number, because the mean of its divisors is an integer number (32567866).

Almost surely, 2^65135731 is an apocalyptic number.

65135731 is a deficient number, since it is larger than the sum of its proper divisors (1).

65135731 is an equidigital number, since it uses as much as digits as its factorization.

65135731 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9450, while the sum is 31.

The square root of 65135731 is about 8070.6710377762. The cubic root of 65135731 is about 402.3522464764.

Adding to 65135731 its reverse (13753156), we get a palindrome (78888887).

The spelling of 65135731 in words is "sixty-five million, one hundred thirty-five thousand, seven hundred thirty-one".