391485103 has 2 divisors, whose sum is σ = 391485104. Its totient is φ = 391485102.

The previous prime is 391485091. The next prime is 391485121. The reversal of 391485103 is 301584193.

It is a weak prime.

It is an emirp because it is prime and its reverse (301584193) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 391485103 - 2⁵ = 391485071 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (391486103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 195742551 + 195742552.

It is an arithmetic number, because the mean of its divisors is an integer number (195742552).

Almost surely, 2^391485103 is an apocalyptic number.

391485103 is a deficient number, since it is larger than the sum of its proper divisors (1).

391485103 is an equidigital number, since it uses as much as digits as its factorization.

391485103 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12960, while the sum is 34.

The square root of 391485103 is about 19785.9824876098. The cubic root of 391485103 is about 731.5405652881.

The spelling of 391485103 in words is "three hundred ninety-one million, four hundred eighty-five thousand, one hundred three".