631168264211 has 4 divisors (see below), whose sum is σ = 631341808752. Its totient is φ = 630994719672.

The previous prime is 631168264183. The next prime is 631168264219. The reversal of 631168264211 is 112462861136.

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

It is a cyclic number.

It is not a de Polignac number, because 631168264211 - 2⁶ = 631168264147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (631168264219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 86766815 + ... + 86774088.

It is an arithmetic number, because the mean of its divisors is an integer number (157835452188).

Almost surely, 2^631168264211 is an apocalyptic number.

631168264211 is a deficient number, since it is larger than the sum of its proper divisors (173544541).

631168264211 is a wasteful number, since it uses less digits than its factorization.

631168264211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173544540.

The product of its digits is 82944, while the sum is 41.

The spelling of 631168264211 in words is "six hundred thirty-one billion, one hundred sixty-eight million, two hundred sixty-four thousand, two hundred eleven".