210968562731 has 2 divisors, whose sum is σ = 210968562732. Its totient is φ = 210968562730.

The previous prime is 210968562713. The next prime is 210968562757. The reversal of 210968562731 is 137265869012.

It is a happy number.

210968562731 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

Together with previous prime (210968562713) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-210968562731 is a prime.

It is a super-2 number, since 2×210968562731² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 210968562731.

It is not a weakly prime, because it can be changed into another prime (210968562781) 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, 105484281365 + 105484281366.

It is an arithmetic number, because the mean of its divisors is an integer number (105484281366).

Almost surely, 2^210968562731 is an apocalyptic number.

210968562731 is a deficient number, since it is larger than the sum of its proper divisors (1).

210968562731 is an equidigital number, since it uses as much as digits as its factorization.

210968562731 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1088640, while the sum is 50.

The spelling of 210968562731 in words is "two hundred ten billion, nine hundred sixty-eight million, five hundred sixty-two thousand, seven hundred thirty-one".