103240111 has 4 divisors (see below), whose sum is σ = 111181672. Its totient is φ = 95298552.

The previous prime is 103240103. The next prime is 103240117. The reversal of 103240111 is 111042301.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 103240111 - 2³ = 103240103 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13), and also a Moran number because the ratio is a prime number: 7941547 = 103240111 / (1 + 0 + 3 + 2 + 4 + 0 + 1 + 1 + 1).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 103240091 and 103240100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103240117) 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, 3970761 + ... + 3970786.

It is an arithmetic number, because the mean of its divisors is an integer number (27795418).

Almost surely, 2^103240111 is an apocalyptic number.

103240111 is a deficient number, since it is larger than the sum of its proper divisors (7941561).

103240111 is an equidigital number, since it uses as much as digits as its factorization.

103240111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7941560.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 103240111 is about 10160.7140989204. The cubic root of 103240111 is about 469.1187818852.

Adding to 103240111 its reverse (111042301), we get a palindrome (214282412).

The spelling of 103240111 in words is "one hundred three million, two hundred forty thousand, one hundred eleven".