71241531 has 8 divisors (see below), whose sum is σ = 95672640. Its totient is φ = 47152392.

The previous prime is 71241523. The next prime is 71241551. The reversal of 71241531 is 13514217.

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

It is not a de Polignac number, because 71241531 - 2³ = 71241523 is a prime.

It is a super-2 number, since 2×71241531² = 10150711478447922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (71241551) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 85005 + ... + 85838.

It is an arithmetic number, because the mean of its divisors is an integer number (11959080).

Almost surely, 2^71241531 is an apocalyptic number.

71241531 is a deficient number, since it is larger than the sum of its proper divisors (24431109).

71241531 is a wasteful number, since it uses less digits than its factorization.

71241531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170985.

The product of its digits is 840, while the sum is 24.

The square root of 71241531 is about 8440.4698328944. The cubic root of 71241531 is about 414.5507908521.

Adding to 71241531 its reverse (13514217), we get a palindrome (84755748).

The spelling of 71241531 in words is "seventy-one million, two hundred forty-one thousand, five hundred thirty-one".