260711831 has 6 divisors (see below), whose sum is σ = 272540520. Its totient is φ = 249376028.

The previous prime is 260711809. The next prime is 260711833. The reversal of 260711831 is 138117062.

It is a de Polignac number, because none of the positive numbers 2^k-260711831 is a prime.

It is a super-2 number, since 2×260711831² = 135941317646745122, 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 = 260711794 and 260711803.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (260711833) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 245891 + ... + 246948.

It is an arithmetic number, because the mean of its divisors is an integer number (45423420).

Almost surely, 2^260711831 is an apocalyptic number.

260711831 is a deficient number, since it is larger than the sum of its proper divisors (11828689).

260711831 is an equidigital number, since it uses as much as digits as its factorization.

260711831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 492885 (or 492862 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 29.

The square root of 260711831 is about 16146.5733516434. The cubic root of 260711831 is about 638.8323689260.

Adding to 260711831 its reverse (138117062), we get a palindrome (398828893).

The spelling of 260711831 in words is "two hundred sixty million, seven hundred eleven thousand, eight hundred thirty-one".