102321913 has 2 divisors, whose sum is σ = 102321914. Its totient is φ = 102321912.

The previous prime is 102321911. The next prime is 102321941. The reversal of 102321913 is 319123201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 89340304 + 12981609 = 9452^2 + 3603^2 .

It is a cyclic number.

It is not a de Polignac number, because 102321913 - 2¹ = 102321911 is a prime.

Together with 102321911, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (102321911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51160956 + 51160957.

It is an arithmetic number, because the mean of its divisors is an integer number (51160957).

Almost surely, 2^102321913 is an apocalyptic number.

It is an amenable number.

102321913 is a deficient number, since it is larger than the sum of its proper divisors (1).

102321913 is an equidigital number, since it uses as much as digits as its factorization.

102321913 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 102321913 is about 10115.4294520796. The cubic root of 102321913 is about 467.7238871577.

The spelling of 102321913 in words is "one hundred two million, three hundred twenty-one thousand, nine hundred thirteen".