20003012291 has 16 divisors (see below), whose sum is σ = 21018547968. Its totient is φ = 19012838400.

The previous prime is 20003012269. The next prime is 20003012297. The reversal of 20003012291 is 19221030002.

It is a cyclic number.

It is not a de Polignac number, because 20003012291 - 2³⁴ = 2823143107 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20003012297) 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 15 ways as a sum of consecutive naturals, for example, 527045 + ... + 563721.

It is an arithmetic number, because the mean of its divisors is an integer number (1313659248).

Almost surely, 2^20003012291 is an apocalyptic number.

20003012291 is a deficient number, since it is larger than the sum of its proper divisors (1015535677).

20003012291 is a wasteful number, since it uses less digits than its factorization.

20003012291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37022.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 20003012291 its reverse (19221030002), we get a palindrome (39224042293).

The spelling of 20003012291 in words is "twenty billion, three million, twelve thousand, two hundred ninety-one".