20032001 has 8 divisors (see below), whose sum is σ = 23138784. Its totient is φ = 17139520.

The previous prime is 20031997. The next prime is 20032013. The reversal of 20032001 is 10023002.

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 20032001 - 2² = 20031997 is a prime.

It is a super-3 number, since 3×20032001³ (a number of 23 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20032001.

It is not an unprimeable number, because it can be changed into a prime (20032021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53375 + ... + 53748.

It is an arithmetic number, because the mean of its divisors is an integer number (2892348).

Almost surely, 2^20032001 is an apocalyptic number.

It is an amenable number.

20032001 is a deficient number, since it is larger than the sum of its proper divisors (3106783).

20032001 is a wasteful number, since it uses less digits than its factorization.

20032001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107151.

The product of its (nonzero) digits is 12, while the sum is 8.

The square root of 20032001 is about 4475.7123455379. The cubic root of 20032001 is about 271.5864579767.

Adding to 20032001 its reverse (10023002), we get a palindrome (30055003).

It can be divided in two parts, 2003 and 2001, that added together give a palindrome (4004).

The spelling of 20032001 in words is "twenty million, thirty-two thousand, one".