20203331013 has 16 divisors (see below), whose sum is σ = 29941977600. Its totient is φ = 13463884800.

The previous prime is 20203330999. The next prime is 20203331017. The reversal of 20203331013 is 31013330202.

It is not a de Polignac number, because 20203331013 - 2⁴ = 20203330997 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20203331017) 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, 64188 + ... + 211013.

It is an arithmetic number, because the mean of its divisors is an integer number (1871373600).

Almost surely, 2^20203331013 is an apocalyptic number.

It is an amenable number.

20203331013 is a deficient number, since it is larger than the sum of its proper divisors (9738646587).

20203331013 is a wasteful number, since it uses less digits than its factorization.

20203331013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 277929 (or 277923 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 18.

Adding to 20203331013 its reverse (31013330202), we get a palindrome (51216661215).

The spelling of 20203331013 in words is "twenty billion, two hundred three million, three hundred thirty-one thousand, thirteen".