2003123147 has 2 divisors, whose sum is σ = 2003123148. Its totient is φ = 2003123146.

The previous prime is 2003123123. The next prime is 2003123159. The reversal of 2003123147 is 7413213002.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2003123147 is a prime.

It is not a weakly prime, because it can be changed into another prime (2003123747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1001561573 + 1001561574.

It is an arithmetic number, because the mean of its divisors is an integer number (1001561574).

Almost surely, 2^2003123147 is an apocalyptic number.

2003123147 is a deficient number, since it is larger than the sum of its proper divisors (1).

2003123147 is an equidigital number, since it uses as much as digits as its factorization.

2003123147 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1008, while the sum is 23.

The square root of 2003123147 is about 44756.2637739121. The cubic root of 2003123147 is about 1260.5765285950.

Adding to 2003123147 its reverse (7413213002), we get a palindrome (9416336149).

The spelling of 2003123147 in words is "two billion, three million, one hundred twenty-three thousand, one hundred forty-seven".