71996331 has 12 divisors (see below), whose sum is σ = 105515816. Its totient is φ = 43633920.

The previous prime is 71996321. The next prime is 71996359. The reversal of 71996331 is 13369917.

It is not a de Polignac number, because 71996331 - 2⁷ = 71996203 is a prime.

It is a super-2 number, since 2×71996331² = 10366943354923122, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 71996331.

It is not an unprimeable number, because it can be changed into a prime (71996321) 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 11 ways as a sum of consecutive naturals, for example, 98806 + ... + 99531.

Almost surely, 2^71996331 is an apocalyptic number.

71996331 is a deficient number, since it is larger than the sum of its proper divisors (33519485).

71996331 is a wasteful number, since it uses less digits than its factorization.

71996331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198362 (or 198351 counting only the distinct ones).

The product of its digits is 30618, while the sum is 39.

The square root of 71996331 is about 8485.0651735859. The cubic root of 71996331 is about 416.0096979834.

It can be divided in two parts, 71996 and 331, that added together give a palindrome (72327).

The spelling of 71996331 in words is "seventy-one million, nine hundred ninety-six thousand, three hundred thirty-one".