631072306 has 16 divisors (see below), whose sum is σ = 979920000. Its totient is φ = 304447248.

The previous prime is 631072297. The next prime is 631072307. The reversal of 631072306 is 603270136.

631072306 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (631072307) 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, 113221 + ... + 118663.

It is an arithmetic number, because the mean of its divisors is an integer number (61245000).

Almost surely, 2^631072306 is an apocalyptic number.

631072306 is a deficient number, since it is larger than the sum of its proper divisors (348847694).

631072306 is a wasteful number, since it uses less digits than its factorization.

631072306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7473.

The product of its (nonzero) digits is 4536, while the sum is 28.

The square root of 631072306 is about 25121.1525611386. The cubic root of 631072306 is about 857.7479866531.

The spelling of 631072306 in words is "six hundred thirty-one million, seventy-two thousand, three hundred six".