71332331 has 4 divisors (see below), whose sum is σ = 81522672. Its totient is φ = 61141992.

The previous prime is 71332319. The next prime is 71332367. The reversal of 71332331 is 13323317.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 71332331 - 2¹⁰ = 71331307 is a prime.

It is a super-2 number, since 2×71332331² = 10176602891787122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 71332297 and 71332306.

It is not an unprimeable number, because it can be changed into a prime (71332381) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5095160 + ... + 5095173.

It is an arithmetic number, because the mean of its divisors is an integer number (20380668).

Almost surely, 2^71332331 is an apocalyptic number.

71332331 is a deficient number, since it is larger than the sum of its proper divisors (10190341).

71332331 is a wasteful number, since it uses less digits than its factorization.

71332331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10190340.

The product of its digits is 1134, while the sum is 23.

The square root of 71332331 is about 8445.8469675930. The cubic root of 71332331 is about 414.7268362519.

Adding to 71332331 its reverse (13323317), we get a palindrome (84655648).

The spelling of 71332331 in words is "seventy-one million, three hundred thirty-two thousand, three hundred thirty-one".