261710313 has 16 divisors (see below), whose sum is σ = 373339200. Its totient is φ = 162578880.

The previous prime is 261710299. The next prime is 261710321. The reversal of 261710313 is 313017162.

It is not a de Polignac number, because 261710313 - 2¹⁰ = 261709289 is a prime.

It is not an unprimeable number, because it can be changed into a prime (261712313) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34158 + ... + 41111.

It is an arithmetic number, because the mean of its divisors is an integer number (23333700).

Almost surely, 2^261710313 is an apocalyptic number.

It is an amenable number.

261710313 is a deficient number, since it is larger than the sum of its proper divisors (111628887).

261710313 is a wasteful number, since it uses less digits than its factorization.

261710313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75352.

The product of its (nonzero) digits is 756, while the sum is 24.

The square root of 261710313 is about 16177.4631200321. The cubic root of 261710313 is about 639.6468698065.

Adding to 261710313 its reverse (313017162), we get a palindrome (574727475).

The spelling of 261710313 in words is "two hundred sixty-one million, seven hundred ten thousand, three hundred thirteen".