260831 has 8 divisors (see below), whose sum is σ = 281520. Its totient is φ = 240768.

The previous prime is 260809. The next prime is 260849. The reversal of 260831 is 138062.

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-260831 is a prime.

It is a super-2 number, since 2×260831² = 136065621122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (260861) 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, 1025 + ... + 1253.

It is an arithmetic number, because the mean of its divisors is an integer number (35190).

2²⁶⁰⁸³¹ is an apocalyptic number.

260831 is a deficient number, since it is larger than the sum of its proper divisors (20689).

260831 is a wasteful number, since it uses less digits than its factorization.

260831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 313.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 260831 is about 510.7161638327. The cubic root of 260831 is about 63.8929688916.

Adding to 260831 its reverse (138062), we get a palindrome (398893).

The spelling of 260831 in words is "two hundred sixty thousand, eight hundred thirty-one".