102312193 has 2 divisors, whose sum is σ = 102312194. Its totient is φ = 102312192.

The previous prime is 102312181. The next prime is 102312209. The reversal of 102312193 is 391213201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 96275344 + 6036849 = 9812^2 + 2457^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102312193 is a prime.

It is not a weakly prime, because it can be changed into another prime (102312143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51156096 + 51156097.

It is an arithmetic number, because the mean of its divisors is an integer number (51156097).

Almost surely, 2^102312193 is an apocalyptic number.

It is an amenable number.

102312193 is a deficient number, since it is larger than the sum of its proper divisors (1).

102312193 is an equidigital number, since it uses as much as digits as its factorization.

102312193 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 324, while the sum is 22.

The square root of 102312193 is about 10114.9489865248. The cubic root of 102312193 is about 467.7090763187.

Adding to 102312193 its reverse (391213201), we get a palindrome (493525394).

The spelling of 102312193 in words is "one hundred two million, three hundred twelve thousand, one hundred ninety-three".