71731036 has 36 divisors (see below), whose sum is σ = 140653800. Its totient is φ = 31956288.

The previous prime is 71731001. The next prime is 71731039. The reversal of 71731036 is 63013717.

It is a junction number, because it is equal to n+sod(n) for n = 71730995 and 71731013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71731039) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17775 + ... + 21433.

It is an arithmetic number, because the mean of its divisors is an integer number (3907050).

Almost surely, 2^71731036 is an apocalyptic number.

It is an amenable number.

71731036 is a deficient number, since it is larger than the sum of its proper divisors (68922764).

71731036 is a wasteful number, since it uses less digits than its factorization.

71731036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3718 (or 3703 counting only the distinct ones).

The product of its (nonzero) digits is 2646, while the sum is 28.

The square root of 71731036 is about 8469.4176895463. The cubic root of 71731036 is about 415.4980926048.

The spelling of 71731036 in words is "seventy-one million, seven hundred thirty-one thousand, thirty-six".