1203113123 has 2 divisors, whose sum is σ = 1203113124. Its totient is φ = 1203113122.

The previous prime is 1203113113. The next prime is 1203113161. The reversal of 1203113123 is 3213113021.

It is a weak prime.

It is an emirp because it is prime and its reverse (3213113021) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1203113123 - 2⁶ = 1203113059 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (1203113113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 601556561 + 601556562.

It is an arithmetic number, because the mean of its divisors is an integer number (601556562).

Almost surely, 2^1203113123 is an apocalyptic number.

1203113123 is a deficient number, since it is larger than the sum of its proper divisors (1).

1203113123 is an equidigital number, since it uses as much as digits as its factorization.

1203113123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 1203113123 is about 34685.9211064086. The cubic root of 1203113123 is about 1063.5767164529.

Adding to 1203113123 its reverse (3213113021), we get a palindrome (4416226144).

The spelling of 1203113123 in words is "one billion, two hundred three million, one hundred thirteen thousand, one hundred twenty-three".