865032313 has 4 divisors (see below), whose sum is σ = 865199440. Its totient is φ = 864865188.

The previous prime is 865032307. The next prime is 865032331. The reversal of 865032313 is 313230568.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-865032313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (865032373) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 75543 + ... + 86236.

It is an arithmetic number, because the mean of its divisors is an integer number (216299860).

Almost surely, 2^865032313 is an apocalyptic number.

It is an amenable number.

865032313 is a deficient number, since it is larger than the sum of its proper divisors (167127).

865032313 is a wasteful number, since it uses less digits than its factorization.

865032313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167126.

The product of its (nonzero) digits is 12960, while the sum is 31.

The square root of 865032313 is about 29411.4316720557. The cubic root of 865032313 is about 952.8198076934.

The spelling of 865032313 in words is "eight hundred sixty-five million, thirty-two thousand, three hundred thirteen".