631307406 has 8 divisors (see below), whose sum is σ = 1262614824. Its totient is φ = 210435800.

The previous prime is 631307389. The next prime is 631307441. The reversal of 631307406 is 604703136.

631307406 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.

631307406 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52608945 + ... + 52608956.

It is an arithmetic number, because the mean of its divisors is an integer number (157826853).

Almost surely, 2^631307406 is an apocalyptic number.

631307406 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

631307406 is a wasteful number, since it uses less digits than its factorization.

631307406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105217906.

The product of its (nonzero) digits is 9072, while the sum is 30.

The square root of 631307406 is about 25125.8314489292. The cubic root of 631307406 is about 857.8544887201.

The spelling of 631307406 in words is "six hundred thirty-one million, three hundred seven thousand, four hundred six".