631319447 has 8 divisors (see below), whose sum is σ = 689392512. Its totient is φ = 573359800.

The previous prime is 631319417. The next prime is 631319459. The reversal of 631319447 is 744913136.

631319447 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 631319447 - 2¹⁰ = 631318423 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 631319447.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (631319417) 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, 16493 + ... + 39174.

It is an arithmetic number, because the mean of its divisors is an integer number (86174064).

Almost surely, 2^631319447 is an apocalyptic number.

631319447 is a deficient number, since it is larger than the sum of its proper divisors (58073065).

631319447 is a wasteful number, since it uses less digits than its factorization.

631319447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56709.

The product of its digits is 54432, while the sum is 38.

The square root of 631319447 is about 25126.0710617478. The cubic root of 631319447 is about 857.8599426718.

The spelling of 631319447 in words is "six hundred thirty-one million, three hundred nineteen thousand, four hundred forty-seven".