12103311 has 16 divisors (see below), whose sum is σ = 17671680. Its totient is φ = 7307520.

The previous prime is 12103279. The next prime is 12103331. The reversal of 12103311 is 11330121.

It is not a de Polignac number, because 12103311 - 2⁵ = 12103279 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12103331) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11130 + ... + 12168.

It is an arithmetic number, because the mean of its divisors is an integer number (1104480).

Almost surely, 2^12103311 is an apocalyptic number.

12103311 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12103311 is a deficient number, since it is larger than the sum of its proper divisors (5568369).

12103311 is a wasteful number, since it uses less digits than its factorization.

12103311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1406.

The product of its (nonzero) digits is 18, while the sum is 12.

The square root of 12103311 is about 3478.9813164201. The cubic root of 12103311 is about 229.5979807659.

Adding to 12103311 its reverse (11330121), we get a palindrome (23433432).

The spelling of 12103311 in words is "twelve million, one hundred three thousand, three hundred eleven".