2003123001 has 32 divisors (see below), whose sum is σ = 3037556736. Its totient is φ = 1163160000.

The previous prime is 2003122991. The next prime is 2003123011. The reversal of 2003123001 is 1003213002.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2003122991) and next prime (2003123011).

It is not a de Polignac number, because 2003123001 - 2¹³ = 2003114809 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2003123011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 93630 + ... + 113016.

It is an arithmetic number, because the mean of its divisors is an integer number (94923648).

Almost surely, 2^2003123001 is an apocalyptic number.

It is an amenable number.

2003123001 is a deficient number, since it is larger than the sum of its proper divisors (1034433735).

2003123001 is a wasteful number, since it uses less digits than its factorization.

2003123001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19533.

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 2003123001 is about 44756.2621428555. The cubic root of 2003123001 is about 1260.5764979688.

Adding to 2003123001 its reverse (1003213002), we get a palindrome (3006336003).

Subtracting from 2003123001 its reverse (1003213002), we obtain a palindrome (999909999).

The spelling of 2003123001 in words is "two billion, three million, one hundred twenty-three thousand, one".