20032011 has 48 divisors (see below), whose sum is σ = 32348160. Its totient is φ = 11901120.

The previous prime is 20031997. The next prime is 20032013. The reversal of 20032011 is 11023002.

It is a happy number.

It is not a de Polignac number, because 20032011 - 2⁷ = 20031883 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 20031984 and 20032002.

It is not an unprimeable number, because it can be changed into a prime (20032013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 282106 + ... + 282176.

It is an arithmetic number, because the mean of its divisors is an integer number (673920).

Almost surely, 2^20032011 is an apocalyptic number.

20032011 is a deficient number, since it is larger than the sum of its proper divisors (12316149).

20032011 is a wasteful number, since it uses less digits than its factorization.

20032011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176 (or 173 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 9.

The square root of 20032011 is about 4475.7134626783. The cubic root of 20032011 is about 271.5865031688.

Adding to 20032011 its reverse (11023002), we get a palindrome (31055013).

Subtracting from 20032011 its reverse (11023002), we obtain a palindrome (9009009).

The spelling of 20032011 in words is "twenty million, thirty-two thousand, eleven".