103491 has 8 divisors (see below), whose sum is σ = 153360. Its totient is φ = 68976.

The previous prime is 103483. The next prime is 103511. The reversal of 103491 is 194301.

It is not a de Polignac number, because 103491 - 2³ = 103483 is a prime.

103491 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (103421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1890 + ... + 1943.

It is an arithmetic number, because the mean of its divisors is an integer number (19170).

2¹⁰³⁴⁹¹ is an apocalyptic number.

103491 is a deficient number, since it is larger than the sum of its proper divisors (49869).

103491 is an equidigital number, since it uses as much as digits as its factorization.

103491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3842 (or 3836 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

The square root of 103491 is about 321.7001709667. The cubic root of 103491 is about 46.9498484210.

Adding to 103491 its reverse (194301), we get a palindrome (297792).

The spelling of 103491 in words is "one hundred three thousand, four hundred ninety-one".