102431512267109 has 2 divisors, whose sum is σ = 102431512267110. Its totient is φ = 102431512267108.

The previous prime is 102431512267103. The next prime is 102431512267159. The reversal of 102431512267109 is 901762215134201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 94675721721025 + 7755790546084 = 9730145^2 + 2784922^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102431512267109 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 102431512267109.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102431512267103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51215756133554 + 51215756133555.

It is an arithmetic number, because the mean of its divisors is an integer number (51215756133555).

Almost surely, 2^{102431512267109} is an apocalyptic number.

It is an amenable number.

102431512267109 is a deficient number, since it is larger than the sum of its proper divisors (1).

102431512267109 is an equidigital number, since it uses as much as digits as its factorization.

102431512267109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 181440, while the sum is 44.

The spelling of 102431512267109 in words is "one hundred two trillion, four hundred thirty-one billion, five hundred twelve million, two hundred sixty-seven thousand, one hundred nine".