633731132197 has 2 divisors, whose sum is σ = 633731132198. Its totient is φ = 633731132196.

The previous prime is 633731132179. The next prime is 633731132263. The reversal of 633731132197 is 791231137336.

Together with previous prime (633731132179) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 578574730881 + 55156401316 = 760641^2 + 234854^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-633731132197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (633731132107) 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 as a sum of consecutive naturals, namely, 316865566098 + 316865566099.

It is an arithmetic number, because the mean of its divisors is an integer number (316865566099).

Almost surely, 2^633731132197 is an apocalyptic number.

It is an amenable number.

633731132197 is a deficient number, since it is larger than the sum of its proper divisors (1).

633731132197 is an equidigital number, since it uses as much as digits as its factorization.

633731132197 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 428652, while the sum is 46.

The spelling of 633731132197 in words is "six hundred thirty-three billion, seven hundred thirty-one million, one hundred thirty-two thousand, one hundred ninety-seven".