103240311 has 4 divisors (see below), whose sum is σ = 137653752. Its totient is φ = 68826872.

The previous prime is 103240309. The next prime is 103240327. The reversal of 103240311 is 113042301.

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 103240311 - 2¹ = 103240309 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103240391) 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, 17206716 + ... + 17206721.

It is an arithmetic number, because the mean of its divisors is an integer number (34413438).

Almost surely, 2^103240311 is an apocalyptic number.

103240311 is a deficient number, since it is larger than the sum of its proper divisors (34413441).

103240311 is an equidigital number, since it uses as much as digits as its factorization.

103240311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34413440.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 103240311 is about 10160.7239407436. The cubic root of 103240311 is about 469.1190848156.

Adding to 103240311 its reverse (113042301), we get a palindrome (216282612).

The spelling of 103240311 in words is "one hundred three million, two hundred forty thousand, three hundred eleven".