71831330 has 16 divisors (see below), whose sum is σ = 130046904. Its totient is φ = 28565760.

The previous prime is 71831317. The next prime is 71831387. The reversal of 71831330 is 3313817.

It can be written as a sum of positive squares in 4 ways, for example, as 71791729 + 39601 = 8473^2 + 199^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 71831330.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19031 + ... + 22490.

Almost surely, 2^71831330 is an apocalyptic number.

71831330 is a deficient number, since it is larger than the sum of its proper divisors (58215574).

71831330 is a wasteful number, since it uses less digits than its factorization.

71831330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41701.

The product of its (nonzero) digits is 1512, while the sum is 26.

The square root of 71831330 is about 8475.3365714879. The cubic root of 71831330 is about 415.6916515869.

The spelling of 71831330 in words is "seventy-one million, eight hundred thirty-one thousand, three hundred thirty".