12103019 has 4 divisors (see below), whose sum is σ = 12740040. Its totient is φ = 11466000.

The previous prime is 12103009. The next prime is 12103043. The reversal of 12103019 is 91030121.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12103019 is a prime.

It is a super-2 number, since 2×12103019² = 292966137828722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12102988 and 12103006.

It is not an unprimeable number, because it can be changed into a prime (12103009) 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, 318482 + ... + 318519.

It is an arithmetic number, because the mean of its divisors is an integer number (3185010).

Almost surely, 2^12103019 is an apocalyptic number.

12103019 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

12103019 is a deficient number, since it is larger than the sum of its proper divisors (637021).

12103019 is an equidigital number, since it uses as much as digits as its factorization.

12103019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 637020.

The product of its (nonzero) digits is 54, while the sum is 17.

The square root of 12103019 is about 3478.9393498594. The cubic root of 12103019 is about 229.5961343524.

The spelling of 12103019 in words is "twelve million, one hundred three thousand, nineteen".