61318271 has 8 divisors (see below), whose sum is σ = 70139040. Its totient is φ = 52512768.

The previous prime is 61318249. The next prime is 61318289. The reversal of 61318271 is 17281316.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 61318271 - 2¹⁰ = 61317247 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61318291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6755 + ... + 12971.

It is an arithmetic number, because the mean of its divisors is an integer number (8767380).

Almost surely, 2^61318271 is an apocalyptic number.

61318271 is a deficient number, since it is larger than the sum of its proper divisors (8820769).

61318271 is a wasteful number, since it uses less digits than its factorization.

61318271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7633.

The product of its digits is 2016, while the sum is 29.

The square root of 61318271 is about 7830.5983807114. The cubic root of 61318271 is about 394.3331610482. Note that the first 3 decimals are identical.

Adding to 61318271 its reverse (17281316), we get a palindrome (78599587).

The spelling of 61318271 in words is "sixty-one million, three hundred eighteen thousand, two hundred seventy-one".