102391103 has 2 divisors, whose sum is σ = 102391104. Its totient is φ = 102391102.

The previous prime is 102391097. The next prime is 102391129. The reversal of 102391103 is 301193201.

It is a weak prime.

It is an emirp because it is prime and its reverse (301193201) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 102391103 - 2⁴ = 102391087 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102396103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51195551 + 51195552.

It is an arithmetic number, because the mean of its divisors is an integer number (51195552).

Almost surely, 2^102391103 is an apocalyptic number.

102391103 is a deficient number, since it is larger than the sum of its proper divisors (1).

102391103 is an equidigital number, since it uses as much as digits as its factorization.

102391103 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 162, while the sum is 20.

The square root of 102391103 is about 10118.8488969843. The cubic root of 102391103 is about 467.8292882498.

The spelling of 102391103 in words is "one hundred two million, three hundred ninety-one thousand, one hundred three".