20311030203 has 16 divisors (see below), whose sum is σ = 27162844800. Its totient is φ = 13499996544.

The previous prime is 20311030169. The next prime is 20311030253. The reversal of 20311030203 is 30203011302.

It is not a de Polignac number, because 20311030203 - 2¹² = 20311026107 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20311030253) 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, 2202400 + ... + 2211602.

It is an arithmetic number, because the mean of its divisors is an integer number (1697677800).

Almost surely, 2^20311030203 is an apocalyptic number.

20311030203 is a deficient number, since it is larger than the sum of its proper divisors (6851814597).

20311030203 is a wasteful number, since it uses less digits than its factorization.

20311030203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11338.

The product of its (nonzero) digits is 108, while the sum is 15.

Adding to 20311030203 its reverse (30203011302), we get a palindrome (50514041505).

The spelling of 20311030203 in words is "twenty billion, three hundred eleven million, thirty thousand, two hundred three".