71321151 has 12 divisors (see below), whose sum is σ = 104526296. Its totient is φ = 43224720.

The previous prime is 71321149. The next prime is 71321161. The reversal of 71321151 is 15112317.

It is a happy number.

It is not a de Polignac number, because 71321151 - 2¹ = 71321149 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 (71321141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 97876 + ... + 98601.

Almost surely, 2^71321151 is an apocalyptic number.

71321151 is a deficient number, since it is larger than the sum of its proper divisors (33205145).

71321151 is a wasteful number, since it uses less digits than its factorization.

71321151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 196502 (or 196491 counting only the distinct ones).

The product of its digits is 210, while the sum is 21.

The square root of 71321151 is about 8445.1850779009. The cubic root of 71321151 is about 414.7051682451.

Adding to 71321151 its reverse (15112317), we get a palindrome (86433468).

The spelling of 71321151 in words is "seventy-one million, three hundred twenty-one thousand, one hundred fifty-one".