2001403001 has 16 divisors (see below), whose sum is σ = 2216211984. Its totient is φ = 1795405824.

The previous prime is 2001402989. The next prime is 2001403031. The reversal of 2001403001 is 1003041002.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 124434025 + 1876968976 = 11155^2 + 43324^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2001403001 is a prime.

It is a super-2 number, since 2×2001403001² = 8011227944823612002, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2001403031) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 525761 + ... + 529553.

It is an arithmetic number, because the mean of its divisors is an integer number (138513249).

Almost surely, 2^2001403001 is an apocalyptic number.

It is an amenable number.

2001403001 is a deficient number, since it is larger than the sum of its proper divisors (214808983).

2001403001 is a wasteful number, since it uses less digits than its factorization.

2001403001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4940.

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 2001403001 is about 44737.0428280636. The cubic root of 2001403001 is about 1260.2155927804.

Adding to 2001403001 its reverse (1003041002), we get a palindrome (3004444003).

The spelling of 2001403001 in words is "two billion, one million, four hundred three thousand, one".