864023231 has 8 divisors (see below), whose sum is σ = 883027200. Its totient is φ = 845045208.

The previous prime is 864023201. The next prime is 864023261. The reversal of 864023231 is 132320468.

It is an interprime number because it is at equal distance from previous prime (864023201) and next prime (864023261).

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-864023231 is a prime.

It is a super-2 number, since 2×864023231² = 1493072287415358722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 864023194 and 864023203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (864023201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 70820 + ... + 82118.

It is an arithmetic number, because the mean of its divisors is an integer number (110378400).

Almost surely, 2^864023231 is an apocalyptic number.

864023231 is a deficient number, since it is larger than the sum of its proper divisors (19003969).

864023231 is a wasteful number, since it uses less digits than its factorization.

864023231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12973.

The product of its (nonzero) digits is 6912, while the sum is 29.

The square root of 864023231 is about 29394.2720780767. The cubic root of 864023231 is about 952.4491674271.

Adding to 864023231 its reverse (132320468), we get a palindrome (996343699).

The spelling of 864023231 in words is "eight hundred sixty-four million, twenty-three thousand, two hundred thirty-one".