2003158123 has 2 divisors, whose sum is σ = 2003158124. Its totient is φ = 2003158122.

The previous prime is 2003158121. The next prime is 2003158141. The reversal of 2003158123 is 3218513002.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2003158123 - 2¹ = 2003158121 is a prime.

Together with 2003158121, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (2003158121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1001579061 + 1001579062.

It is an arithmetic number, because the mean of its divisors is an integer number (1001579062).

Almost surely, 2^2003158123 is an apocalyptic number.

2003158123 is a deficient number, since it is larger than the sum of its proper divisors (1).

2003158123 is an equidigital number, since it uses as much as digits as its factorization.

2003158123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 2003158123 is about 44756.6545108099. The cubic root of 2003158123 is about 1260.5838654160.

The spelling of 2003158123 in words is "two billion, three million, one hundred fifty-eight thousand, one hundred twenty-three".