1203103123 has 4 divisors (see below), whose sum is σ = 1266424360. Its totient is φ = 1139781888.

The previous prime is 1203103093. The next prime is 1203103129. The reversal of 1203103123 is 3213013021.

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-1203103123 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1203103097 and 1203103106.

It is not an unprimeable number, because it can be changed into a prime (1203103129) 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, 31660590 + ... + 31660627.

It is an arithmetic number, because the mean of its divisors is an integer number (316606090).

Almost surely, 2^1203103123 is an apocalyptic number.

1203103123 is a deficient number, since it is larger than the sum of its proper divisors (63321237).

1203103123 is an equidigital number, since it uses as much as digits as its factorization.

1203103123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63321236.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 1203103123 is about 34685.7769554035. The cubic root of 1203103123 is about 1063.5737697096.

Adding to 1203103123 its reverse (3213013021), we get a palindrome (4416116144).

The spelling of 1203103123 in words is "one billion, two hundred three million, one hundred three thousand, one hundred twenty-three".