102505343126231 has 2 divisors, whose sum is σ = 102505343126232. Its totient is φ = 102505343126230.

The previous prime is 102505343126213. The next prime is 102505343126309. The reversal of 102505343126231 is 132621343505201.

Together with previous prime (102505343126213) 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-102505343126231 is a prime.

It is a super-2 number, since 2×102505343126231² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102505343126201) 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, 51252671563115 + 51252671563116.

It is an arithmetic number, because the mean of its divisors is an integer number (51252671563116).

Almost surely, 2^{102505343126231} is an apocalyptic number.

102505343126231 is a deficient number, since it is larger than the sum of its proper divisors (1).

102505343126231 is an equidigital number, since it uses as much as digits as its factorization.

102505343126231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 129600, while the sum is 38.

The spelling of 102505343126231 in words is "one hundred two trillion, five hundred five billion, three hundred forty-three million, one hundred twenty-six thousand, two hundred thirty-one".