71325231 has 16 divisors (see below), whose sum is σ = 99449856. Its totient is φ = 45384416.

The previous prime is 71325197. The next prime is 71325253. The reversal of 71325231 is 13252317.

It is a cyclic number.

It is not a de Polignac number, because 71325231 - 2⁷ = 71325103 is a prime.

It is a super-2 number, since 2×71325231² = 10174577154406722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71325271) 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 15 ways as a sum of consecutive naturals, for example, 44266 + ... + 45848.

It is an arithmetic number, because the mean of its divisors is an integer number (6215616).

Almost surely, 2^71325231 is an apocalyptic number.

71325231 is a deficient number, since it is larger than the sum of its proper divisors (28124625).

71325231 is a wasteful number, since it uses less digits than its factorization.

71325231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2262.

The product of its digits is 1260, while the sum is 24.

The square root of 71325231 is about 8445.4266322075. The cubic root of 71325231 is about 414.7130759733.

Adding to 71325231 its reverse (13252317), we get a palindrome (84577548).

The spelling of 71325231 in words is "seventy-one million, three hundred twenty-five thousand, two hundred thirty-one".