271312261 has 4 divisors (see below), whose sum is σ = 295977024. Its totient is φ = 246647500.

The previous prime is 271312213. The next prime is 271312271. The reversal of 271312261 is 162213172.

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 not a de Polignac number, because 271312261 - 2⁷ = 271312133 is a prime.

It is a super-2 number, since 2×271312261² = 147220685937864242, 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 (271312271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12332365 + ... + 12332386.

It is an arithmetic number, because the mean of its divisors is an integer number (73994256).

Almost surely, 2^271312261 is an apocalyptic number.

It is an amenable number.

271312261 is a deficient number, since it is larger than the sum of its proper divisors (24664763).

271312261 is a wasteful number, since it uses less digits than its factorization.

271312261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24664762.

The product of its digits is 1008, while the sum is 25.

The square root of 271312261 is about 16471.5591551013. The cubic root of 271312261 is about 647.3758191216.

It can be divided in two parts, 27131 and 2261, that added together give a palindrome (29392).

The spelling of 271312261 in words is "two hundred seventy-one million, three hundred twelve thousand, two hundred sixty-one".