631662233 has 2 divisors, whose sum is σ = 631662234. Its totient is φ = 631662232.

The previous prime is 631662223. The next prime is 631662289. The reversal of 631662233 is 332266136.

631662233 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 554696704 + 76965529 = 23552^2 + 8773^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-631662233 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 631662233.

It is not a weakly prime, because it can be changed into another prime (631662223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 315831116 + 315831117.

It is an arithmetic number, because the mean of its divisors is an integer number (315831117).

Almost surely, 2^631662233 is an apocalyptic number.

It is an amenable number.

631662233 is a deficient number, since it is larger than the sum of its proper divisors (1).

631662233 is an equidigital number, since it uses as much as digits as its factorization.

631662233 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23328, while the sum is 32.

The square root of 631662233 is about 25132.8914572120. The cubic root of 631662233 is about 858.0151779617.

The spelling of 631662233 in words is "six hundred thirty-one million, six hundred sixty-two thousand, two hundred thirty-three".