102223309 has 2 divisors, whose sum is σ = 102223310. Its totient is φ = 102223308.

The previous prime is 102223271. The next prime is 102223327. The reversal of 102223309 is 903322201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 68525284 + 33698025 = 8278^2 + 5805^2 .

It is an emirp because it is prime and its reverse (903322201) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 102223309 - 2⁹ = 102222797 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 102223309.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102223369) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51111654 + 51111655.

It is an arithmetic number, because the mean of its divisors is an integer number (51111655).

Almost surely, 2^102223309 is an apocalyptic number.

It is an amenable number.

102223309 is a deficient number, since it is larger than the sum of its proper divisors (1).

102223309 is an equidigital number, since it uses as much as digits as its factorization.

102223309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 22.

The square root of 102223309 is about 10110.5543369293. The cubic root of 102223309 is about 467.5735958945.

It can be divided in two parts, 10222 and 3309, that added together give a palindrome (13531).

The spelling of 102223309 in words is "one hundred two million, two hundred twenty-three thousand, three hundred nine".