631347 has 8 divisors (see below), whose sum is σ = 845520. Its totient is φ = 419040.

The previous prime is 631339. The next prime is 631357. The reversal of 631347 is 743136.

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

It is not a de Polignac number, because 631347 - 2³ = 631339 is a prime.

It is not an unprimeable number, because it can be changed into a prime (631307) 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, 897 + ... + 1437.

It is an arithmetic number, because the mean of its divisors is an integer number (105690).

2⁶³¹³⁴⁷ is an apocalyptic number.

631347 is a deficient number, since it is larger than the sum of its proper divisors (214173).

631347 is a wasteful number, since it uses less digits than its factorization.

631347 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 933.

The product of its digits is 1512, while the sum is 24.

The square root of 631347 is about 794.5734704859. The cubic root of 631347 is about 85.7872422498.

The spelling of 631347 in words is "six hundred thirty-one thousand, three hundred forty-seven".