631047263 has 16 divisors (see below), whose sum is σ = 787622400. Its totient is φ = 491186400.

The previous prime is 631047233. The next prime is 631047283. The reversal of 631047263 is 362740136.

631047263 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 631047263 - 2¹² = 631043167 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (631047223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 75413 + ... + 83361.

It is an arithmetic number, because the mean of its divisors is an integer number (49226400).

Almost surely, 2^631047263 is an apocalyptic number.

631047263 is a deficient number, since it is larger than the sum of its proper divisors (156575137).

631047263 is a wasteful number, since it uses less digits than its factorization.

631047263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8998.

The product of its (nonzero) digits is 18144, while the sum is 32.

The square root of 631047263 is about 25120.6541117066. The cubic root of 631047263 is about 857.7366404271.

Adding to 631047263 its reverse (362740136), we get a palindrome (993787399).

The spelling of 631047263 in words is "six hundred thirty-one million, forty-seven thousand, two hundred sixty-three".