2003001403 has 8 divisors (see below), whose sum is σ = 2179317728. Its totient is φ = 1829862144.

The previous prime is 2003001389. The next prime is 2003001449. The reversal of 2003001403 is 3041003002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2003001403 - 2²⁵ = 1969446971 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2003001463) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 792951 + ... + 795472.

It is an arithmetic number, because the mean of its divisors is an integer number (272414716).

Almost surely, 2^2003001403 is an apocalyptic number.

2003001403 is a deficient number, since it is larger than the sum of its proper divisors (176316325).

2003001403 is a wasteful number, since it uses less digits than its factorization.

2003001403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1588533.

The product of its (nonzero) digits is 72, while the sum is 13.

The square root of 2003001403 is about 44754.9036754633. The cubic root of 2003001403 is about 1260.5509900190.

Adding to 2003001403 its reverse (3041003002), we get a palindrome (5044004405).

The spelling of 2003001403 in words is "two billion, three million, one thousand, four hundred three".