102971807 has 2 divisors, whose sum is σ = 102971808. Its totient is φ = 102971806.

The previous prime is 102971741. The next prime is 102971809. The reversal of 102971807 is 708179201.

It is a strong prime.

It is an emirp because it is prime and its reverse (708179201) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102971807 is a prime.

Together with 102971809, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102971809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51485903 + 51485904.

It is an arithmetic number, because the mean of its divisors is an integer number (51485904).

Almost surely, 2^102971807 is an apocalyptic number.

102971807 is a deficient number, since it is larger than the sum of its proper divisors (1).

102971807 is an equidigital number, since it uses as much as digits as its factorization.

102971807 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7056, while the sum is 35.

The square root of 102971807 is about 10147.5025006156. The cubic root of 102971807 is about 468.7120419160.

The spelling of 102971807 in words is "one hundred two million, nine hundred seventy-one thousand, eight hundred seven".