260820831 has 8 divisors (see below), whose sum is σ = 347837824. Its totient is φ = 173842200.

The previous prime is 260820821. The next prime is 260820839. The reversal of 260820831 is 138028062.

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

It is not a de Polignac number, because 260820831 - 2¹¹ = 260818783 is a prime.

It is a super-2 number, since 2×260820831² = 136055011767061122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (260820839) 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, 16140 + ... + 27966.

It is an arithmetic number, because the mean of its divisors is an integer number (43479728).

Almost surely, 2^260820831 is an apocalyptic number.

260820831 is a deficient number, since it is larger than the sum of its proper divisors (87016993).

260820831 is a wasteful number, since it uses less digits than its factorization.

260820831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19181.

The product of its (nonzero) digits is 4608, while the sum is 30.

The square root of 260820831 is about 16149.9483280907. The cubic root of 260820831 is about 638.9213855055.

Adding to 260820831 its reverse (138028062), we get a palindrome (398848893).

The spelling of 260820831 in words is "two hundred sixty million, eight hundred twenty thousand, eight hundred thirty-one".