631048900609 has 4 divisors (see below), whose sum is σ = 631054771204. Its totient is φ = 631043030016.

The previous prime is 631048900577. The next prime is 631048900613. The reversal of 631048900609 is 906009840136.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 374250297600 + 256798603009 = 611760^2 + 506753^2 .

It is a cyclic number.

It is not a de Polignac number, because 631048900609 - 2⁵ = 631048900577 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (631048300609) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2770992 + ... + 2990065.

It is an arithmetic number, because the mean of its divisors is an integer number (157763692801).

Almost surely, 2^631048900609 is an apocalyptic number.

It is an amenable number.

631048900609 is a deficient number, since it is larger than the sum of its proper divisors (5870595).

631048900609 is a wasteful number, since it uses less digits than its factorization.

631048900609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5870594.

The product of its (nonzero) digits is 279936, while the sum is 46.

The spelling of 631048900609 in words is "six hundred thirty-one billion, forty-eight million, nine hundred thousand, six hundred nine".