631055066209 has 8 divisors (see below), whose sum is σ = 651420815360. Its totient is φ = 610689888000.

The previous prime is 631055066149. The next prime is 631055066237. The reversal of 631055066209 is 902660550136.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 631055066209 - 2²³ = 631046677601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (631055066309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4242112 + ... + 4388350.

It is an arithmetic number, because the mean of its divisors is an integer number (81427601920).

Almost surely, 2^631055066209 is an apocalyptic number.

It is an amenable number.

631055066209 is a deficient number, since it is larger than the sum of its proper divisors (20365749151).

631055066209 is a wasteful number, since it uses less digits than its factorization.

631055066209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 285471.

The product of its (nonzero) digits is 291600, while the sum is 43.

The spelling of 631055066209 in words is "six hundred thirty-one billion, fifty-five million, sixty-six thousand, two hundred nine".