102321312073 has 2 divisors, whose sum is σ = 102321312074. Its totient is φ = 102321312072.

The previous prime is 102321312017. The next prime is 102321312131. The reversal of 102321312073 is 370213123201.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 55062030409 + 47259281664 = 234653^2 + 217392^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102321312073 is a prime.

It is not a weakly prime, because it can be changed into another prime (102321312173) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51160656036 + 51160656037.

It is an arithmetic number, because the mean of its divisors is an integer number (51160656037).

Almost surely, 2^102321312073 is an apocalyptic number.

It is an amenable number.

102321312073 is a deficient number, since it is larger than the sum of its proper divisors (1).

102321312073 is an equidigital number, since it uses as much as digits as its factorization.

102321312073 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1512, while the sum is 25.

Adding to 102321312073 its reverse (370213123201), we get a palindrome (472534435274).

The spelling of 102321312073 in words is "one hundred two billion, three hundred twenty-one million, three hundred twelve thousand, seventy-three".