102312389 has 2 divisors, whose sum is σ = 102312390. Its totient is φ = 102312388.

The previous prime is 102312367. The next prime is 102312401. The reversal of 102312389 is 983213201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 99161764 + 3150625 = 9958^2 + 1775^2 .

It is an emirp because it is prime and its reverse (983213201) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 102312389 - 2¹⁶ = 102246853 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102314389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51156194 + 51156195.

It is an arithmetic number, because the mean of its divisors is an integer number (51156195).

Almost surely, 2^102312389 is an apocalyptic number.

It is an amenable number.

102312389 is a deficient number, since it is larger than the sum of its proper divisors (1).

102312389 is an equidigital number, since it uses as much as digits as its factorization.

102312389 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 102312389 is about 10114.9586751504. The cubic root of 102312389 is about 467.7093749827.

The spelling of 102312389 in words is "one hundred two million, three hundred twelve thousand, three hundred eighty-nine".