201631806793 has 2 divisors, whose sum is σ = 201631806794. Its totient is φ = 201631806792.

The previous prime is 201631806787. The next prime is 201631806799. The reversal of 201631806793 is 397608136102.

201631806793 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a balanced prime because it is at equal distance from previous prime (201631806787) and next prime (201631806799).

It can be written as a sum of positive squares in only one way, i.e., 197644263184 + 3987543609 = 444572^2 + 63147^2 .

It is a cyclic number.

It is not a de Polignac number, because 201631806793 - 2⁹ = 201631806281 is a prime.

It is not a weakly prime, because it can be changed into another prime (201631806799) 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, 100815903396 + 100815903397.

It is an arithmetic number, because the mean of its divisors is an integer number (100815903397).

Almost surely, 2^201631806793 is an apocalyptic number.

It is an amenable number.

201631806793 is a deficient number, since it is larger than the sum of its proper divisors (1).

201631806793 is an equidigital number, since it uses as much as digits as its factorization.

201631806793 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 326592, while the sum is 46.

The spelling of 201631806793 in words is "two hundred one billion, six hundred thirty-one million, eight hundred six thousand, seven hundred ninety-three".