103085391 has 4 divisors (see below), whose sum is σ = 137447192. Its totient is φ = 68723592.

The previous prime is 103085377. The next prime is 103085443. The reversal of 103085391 is 193580301.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 193580301 = 3 ⋅64526767.

It is not a de Polignac number, because 103085391 - 2¹³ = 103077199 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103085891) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17180896 + ... + 17180901.

It is an arithmetic number, because the mean of its divisors is an integer number (34361798).

Almost surely, 2^103085391 is an apocalyptic number.

103085391 is a deficient number, since it is larger than the sum of its proper divisors (34361801).

103085391 is an equidigital number, since it uses as much as digits as its factorization.

103085391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34361800.

The product of its (nonzero) digits is 3240, while the sum is 30.

The square root of 103085391 is about 10153.0976061496. The cubic root of 103085391 is about 468.8843176328.

The spelling of 103085391 in words is "one hundred three million, eighty-five thousand, three hundred ninety-one".