77031317 has 8 divisors (see below), whose sum is σ = 84303072. Its totient is φ = 69804400.

The previous prime is 77031287. The next prime is 77031319. The reversal of 77031317 is 71313077.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-77031317 is a prime.

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 77031317.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77031319) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7559 + ... + 14532.

It is an arithmetic number, because the mean of its divisors is an integer number (10537884).

Almost surely, 2^77031317 is an apocalyptic number.

It is an amenable number.

77031317 is a deficient number, since it is larger than the sum of its proper divisors (7271755).

77031317 is a wasteful number, since it uses less digits than its factorization.

77031317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22419.

The product of its (nonzero) digits is 3087, while the sum is 29.

The square root of 77031317 is about 8776.7486576750. The cubic root of 77031317 is about 425.4897551297.

The spelling of 77031317 in words is "seventy-seven million, thirty-one thousand, three hundred seventeen".