261160313 has 4 divisors (see below), whose sum is σ = 261210960. Its totient is φ = 261109668.

The previous prime is 261160267. The next prime is 261160349. The reversal of 261160313 is 313061162.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 261160313 - 2⁸ = 261160057 is a prime.

It is a Duffinian number.

It is a plaindrome in base 11.

It is not an unprimeable number, because it can be changed into a prime (261160363) 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, 16583 + ... + 28236.

It is an arithmetic number, because the mean of its divisors is an integer number (65302740).

Almost surely, 2^261160313 is an apocalyptic number.

It is an amenable number.

261160313 is a deficient number, since it is larger than the sum of its proper divisors (50647).

261160313 is an equidigital number, since it uses as much as digits as its factorization.

261160313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50646.

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

The square root of 261160313 is about 16160.4552225487. The cubic root of 261160313 is about 639.1984700606.

The spelling of 261160313 in words is "two hundred sixty-one million, one hundred sixty thousand, three hundred thirteen".