71317630 has 16 divisors (see below), whose sum is σ = 128951424. Its totient is φ = 28398240.

The previous prime is 71317627. The next prime is 71317643. The reversal of 71317630 is 3671317.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13761 + ... + 18220.

It is an arithmetic number, because the mean of its divisors is an integer number (8059464).

Almost surely, 2^71317630 is an apocalyptic number.

71317630 is a deficient number, since it is larger than the sum of its proper divisors (57633794).

71317630 is a wasteful number, since it uses less digits than its factorization.

71317630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32211.

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

The square root of 71317630 is about 8444.9766133483. The cubic root of 71317630 is about 414.6983437108.

Adding to 71317630 its reverse (3671317), we get a palindrome (74988947).

The spelling of 71317630 in words is "seventy-one million, three hundred seventeen thousand, six hundred thirty".