12723103 has 4 divisors (see below), whose sum is σ = 13392760. Its totient is φ = 12053448.

The previous prime is 12723101. The next prime is 12723107. The reversal of 12723103 is 30132721.

12723103 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 12723103 - 2¹ = 12723101 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19), and also a Moran number because the ratio is a prime number: 669637 = 12723103 / (1 + 2 + 7 + 2 + 3 + 1 + 0 + 3).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12723101) 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, 334800 + ... + 334837.

It is an arithmetic number, because the mean of its divisors is an integer number (3348190).

Almost surely, 2^12723103 is an apocalyptic number.

12723103 is a deficient number, since it is larger than the sum of its proper divisors (669657).

12723103 is an equidigital number, since it uses as much as digits as its factorization.

12723103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 669656.

The product of its (nonzero) digits is 252, while the sum is 19.

The square root of 12723103 is about 3566.9458924968. The cubic root of 12723103 is about 233.4520441295.

Adding to 12723103 its reverse (30132721), we get a palindrome (42855824).

The spelling of 12723103 in words is "twelve million, seven hundred twenty-three thousand, one hundred three".