20203203031 has 4 divisors (see below), whose sum is σ = 22039857864. Its totient is φ = 18366548200.

The previous prime is 20203202993. The next prime is 20203203049. The reversal of 20203203031 is 13030230202.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 20203203031 - 2⁹ = 20203202519 is a prime.

It is a super-2 number, since 2×20203203031² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20203202996 and 20203203014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20203203731) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 918327400 + ... + 918327421.

It is an arithmetic number, because the mean of its divisors is an integer number (5509964466).

Almost surely, 2^20203203031 is an apocalyptic number.

20203203031 is a deficient number, since it is larger than the sum of its proper divisors (1836654833).

20203203031 is a wasteful number, since it uses less digits than its factorization.

20203203031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1836654832.

The product of its (nonzero) digits is 216, while the sum is 16.

Adding to 20203203031 its reverse (13030230202), we get a palindrome (33233433233).

The spelling of 20203203031 in words is "twenty billion, two hundred three million, two hundred three thousand, thirty-one".