260311361 has 4 divisors (see below), whose sum is σ = 275623812. Its totient is φ = 244998912.

The previous prime is 260311349. The next prime is 260311421. The reversal of 260311361 is 163113062.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 107640625 + 152670736 = 10375^2 + 12356^2 .

It is a cyclic number.

It is not a de Polignac number, because 260311361 - 2⁶ = 260311297 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (260311301) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7656200 + ... + 7656233.

It is an arithmetic number, because the mean of its divisors is an integer number (68905953).

Almost surely, 2^260311361 is an apocalyptic number.

It is an amenable number.

260311361 is a deficient number, since it is larger than the sum of its proper divisors (15312451).

260311361 is a wasteful number, since it uses less digits than its factorization.

260311361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15312450.

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 260311361 is about 16134.1675025394. The cubic root of 260311361 is about 638.5051055490.

The spelling of 260311361 in words is "two hundred sixty million, three hundred eleven thousand, three hundred sixty-one".