20003331 has 8 divisors (see below), whose sum is σ = 26715904. Its totient is φ = 13313160.

The previous prime is 20003317. The next prime is 20003369. The reversal of 20003331 is 13330002.

It is a happy number.

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

It is not a de Polignac number, because 20003331 - 2⁶ = 20003267 is a prime.

It is a super-2 number, since 2×20003331² = 800266502191122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20003131) 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, 3391 + ... + 7176.

It is an arithmetic number, because the mean of its divisors is an integer number (3339488).

Almost surely, 2^20003331 is an apocalyptic number.

20003331 is a deficient number, since it is larger than the sum of its proper divisors (6712573).

20003331 is a wasteful number, since it uses less digits than its factorization.

20003331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11201.

The product of its (nonzero) digits is 54, while the sum is 12.

The square root of 20003331 is about 4472.5083566160. The cubic root of 20003331 is about 271.4568303648.

Adding to 20003331 its reverse (13330002), we get a palindrome (33333333).

The spelling of 20003331 in words is "twenty million, three thousand, three hundred thirty-one".