103491243 has 8 divisors (see below), whose sum is σ = 153320400. Its totient is φ = 68994144.

The previous prime is 103491221. The next prime is 103491253. The reversal of 103491243 is 342194301.

It is not a de Polignac number, because 103491243 - 2⁵ = 103491211 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 3833009 = 103491243 / (1 + 0 + 3 + 4 + 9 + 1 + 2 + 4 + 3).

It is not an unprimeable number, because it can be changed into a prime (103491253) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1916478 + ... + 1916531.

It is an arithmetic number, because the mean of its divisors is an integer number (19165050).

Almost surely, 2^103491243 is an apocalyptic number.

103491243 is a deficient number, since it is larger than the sum of its proper divisors (49829157).

103491243 is an equidigital number, since it uses as much as digits as its factorization.

103491243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3833018 (or 3833012 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 103491243 is about 10173.0645825140. The cubic root of 103491243 is about 469.4988516748.

The spelling of 103491243 in words is "one hundred three million, four hundred ninety-one thousand, two hundred forty-three".