260831205 has 32 divisors (see below), whose sum is σ = 466848000. Its totient is φ = 138165696.

The previous prime is 260831189. The next prime is 260831213. The reversal of 260831205 is 502138062.

260831205 is a `hidden beast` number, since 2 + 608 + 31 + 20 + 5 = 666.

It is not a de Polignac number, because 260831205 - 2⁴ = 260831189 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13632 + ... + 26598.

It is an arithmetic number, because the mean of its divisors is an integer number (14589000).

Almost surely, 2^260831205 is an apocalyptic number.

It is an amenable number.

260831205 is a deficient number, since it is larger than the sum of its proper divisors (206016795).

260831205 is a wasteful number, since it uses less digits than its factorization.

260831205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13130 (or 13124 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 260831205 is about 16150.2695023953. The cubic root of 260831205 is about 638.9298563046.

Adding to 260831205 its reverse (502138062), we get a palindrome (762969267).

The spelling of 260831205 in words is "two hundred sixty million, eight hundred thirty-one thousand, two hundred five".