71433231 has 8 divisors (see below), whose sum is σ = 95314944. Its totient is φ = 47586840.

The previous prime is 71433227. The next prime is 71433253. The reversal of 71433231 is 13233417.

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

It is not a de Polignac number, because 71433231 - 2² = 71433227 is a prime.

It is a super-2 number, since 2×71433231² = 10205412982198722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71433221) 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, 3681 + ... + 12506.

It is an arithmetic number, because the mean of its divisors is an integer number (11914368).

Almost surely, 2^71433231 is an apocalyptic number.

71433231 is a deficient number, since it is larger than the sum of its proper divisors (23881713).

71433231 is a wasteful number, since it uses less digits than its factorization.

71433231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17661.

The product of its digits is 1512, while the sum is 24.

The square root of 71433231 is about 8451.8182067529. The cubic root of 71433231 is about 414.9222886376.

Adding to 71433231 its reverse (13233417), we get a palindrome (84666648).

The spelling of 71433231 in words is "seventy-one million, four hundred thirty-three thousand, two hundred thirty-one".