860531 has 8 divisors (see below), whose sum is σ = 989280. Its totient is φ = 733248.

The previous prime is 860513. The next prime is 860533. The reversal of 860531 is 135068.

860531 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 a cyclic number.

It is not a de Polignac number, because 860531 - 2¹⁸ = 598387 is a prime.

It is a super-2 number, since 2×860531² = 1481027203922, 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 = 860497 and 860506.

It is not an unprimeable number, because it can be changed into a prime (860533) 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, 1655 + ... + 2111.

It is an arithmetic number, because the mean of its divisors is an integer number (123660).

2⁸⁶⁰⁵³¹ is an apocalyptic number.

860531 is a deficient number, since it is larger than the sum of its proper divisors (128749).

860531 is a wasteful number, since it uses less digits than its factorization.

860531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 733.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 860531 is about 927.6481013833. The cubic root of 860531 is about 95.1164223632.

Adding to 860531 its reverse (135068), we get a palindrome (995599).

The spelling of 860531 in words is "eight hundred sixty thousand, five hundred thirty-one".