865731349311 has 8 divisors (see below), whose sum is σ = 1154443019184. Its totient is φ = 577086956160.

The previous prime is 865731349303. The next prime is 865731349331. The reversal of 865731349311 is 113943137568.

It is a happy number.

865731349311 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 865731349311 - 2³ = 865731349303 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (865731349331) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16789146 + ... + 16840631.

It is an arithmetic number, because the mean of its divisors is an integer number (144305377398).

Almost surely, 2^865731349311 is an apocalyptic number.

865731349311 is a deficient number, since it is larger than the sum of its proper divisors (288711669873).

865731349311 is a wasteful number, since it uses less digits than its factorization.

865731349311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33638361.

The product of its digits is 1632960, while the sum is 51.

The spelling of 865731349311 in words is "eight hundred sixty-five billion, seven hundred thirty-one million, three hundred forty-nine thousand, three hundred eleven".