102917231 has 2 divisors, whose sum is σ = 102917232. Its totient is φ = 102917230.

The previous prime is 102917209. The next prime is 102917233. The reversal of 102917231 is 132719201.

It is a strong prime.

It is an emirp because it is prime and its reverse (132719201) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102917231 is a prime.

It is a super-2 number, since 2×102917231² = 21183912873414722, which contains 22 as substring.

Together with 102917233, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 102917231.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102917233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51458615 + 51458616.

It is an arithmetic number, because the mean of its divisors is an integer number (51458616).

Almost surely, 2^102917231 is an apocalyptic number.

102917231 is a deficient number, since it is larger than the sum of its proper divisors (1).

102917231 is an equidigital number, since it uses as much as digits as its factorization.

102917231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 756, while the sum is 26.

The square root of 102917231 is about 10144.8130096124. The cubic root of 102917231 is about 468.6292200583.

The spelling of 102917231 in words is "one hundred two million, nine hundred seventeen thousand, two hundred thirty-one".