20203135011 has 12 divisors (see below), whose sum is σ = 29265927600. Its totient is φ = 13430162160.

The previous prime is 20203135009. The next prime is 20203135021. The reversal of 20203135011 is 11053130202.

It is not a de Polignac number, because 20203135011 - 2¹ = 20203135009 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20203135021) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3212895 + ... + 3219176.

It is an arithmetic number, because the mean of its divisors is an integer number (2438827300).

Almost surely, 2^20203135011 is an apocalyptic number.

20203135011 is a deficient number, since it is larger than the sum of its proper divisors (9062792589).

20203135011 is a wasteful number, since it uses less digits than its factorization.

20203135011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6432426 (or 6432423 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

Adding to 20203135011 its reverse (11053130202), we get a palindrome (31256265213).

The spelling of 20203135011 in words is "twenty billion, two hundred three million, one hundred thirty-five thousand, eleven".