631344205 has 16 divisors (see below), whose sum is σ = 771272064. Its totient is φ = 495996480.

The previous prime is 631344193. The next prime is 631344211. The reversal of 631344205 is 502443136.

It is not a de Polignac number, because 631344205 - 2⁵ = 631344173 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 250984 + ... + 253486.

It is an arithmetic number, because the mean of its divisors is an integer number (48204504).

Almost surely, 2^631344205 is an apocalyptic number.

It is an amenable number.

631344205 is a deficient number, since it is larger than the sum of its proper divisors (139927859).

631344205 is a wasteful number, since it uses less digits than its factorization.

631344205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3396.

The product of its (nonzero) digits is 8640, while the sum is 28.

The square root of 631344205 is about 25126.5637324327. The cubic root of 631344205 is about 857.8711565503.

The spelling of 631344205 in words is "six hundred thirty-one million, three hundred forty-four thousand, two hundred five".