71024231 has 4 divisors (see below), whose sum is σ = 71099712. Its totient is φ = 70948752.

The previous prime is 71024197. The next prime is 71024237. The reversal of 71024231 is 13242017.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13242017 = 487 ⋅27191.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-71024231 is a prime.

It is a super-2 number, since 2×71024231² = 10088882778282722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71024237) 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 3 ways as a sum of consecutive naturals, for example, 36311 + ... + 38216.

It is an arithmetic number, because the mean of its divisors is an integer number (17774928).

Almost surely, 2^71024231 is an apocalyptic number.

71024231 is a deficient number, since it is larger than the sum of its proper divisors (75481).

71024231 is an equidigital number, since it uses as much as digits as its factorization.

71024231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75480.

The product of its (nonzero) digits is 336, while the sum is 20.

The square root of 71024231 is about 8427.5874958377. The cubic root of 71024231 is about 414.1288757605.

Adding to 71024231 its reverse (13242017), we get a palindrome (84266248).

It can be divided in two parts, 7 and 1024231, that multiplied together give a palindrome (7169617).

The spelling of 71024231 in words is "seventy-one million, twenty-four thousand, two hundred thirty-one".