71125331 has 8 divisors (see below), whose sum is σ = 75861360. Its totient is φ = 66450688.

The previous prime is 71125319. The next prime is 71125333. The reversal of 71125331 is 13352117.

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

It is not a de Polignac number, because 71125331 - 2¹⁰ = 71124307 is a prime.

It is a super-2 number, since 2×71125331² = 10117625419719122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 71125297 and 71125306.

It is not an unprimeable number, because it can be changed into a prime (71125333) 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 7 ways as a sum of consecutive naturals, for example, 12941 + ... + 17598.

It is an arithmetic number, because the mean of its divisors is an integer number (9482670).

Almost surely, 2^71125331 is an apocalyptic number.

71125331 is a deficient number, since it is larger than the sum of its proper divisors (4736029).

71125331 is a wasteful number, since it uses less digits than its factorization.

71125331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30693.

The product of its digits is 630, while the sum is 23.

The square root of 71125331 is about 8433.5835206631. The cubic root of 71125331 is about 414.3252809331.

Adding to 71125331 its reverse (13352117), we get a palindrome (84477448).

The spelling of 71125331 in words is "seventy-one million, one hundred twenty-five thousand, three hundred thirty-one".