20203000031 has 4 divisors (see below), whose sum is σ = 20319780552. Its totient is φ = 20086219512.

The previous prime is 20203000021. The next prime is 20203000063. The reversal of 20203000031 is 13000030202.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13000030202 = 2 ⋅6500015101.

It is a cyclic number.

It is not a de Polignac number, because 20203000031 - 2⁶ = 20202999967 is a prime.

It is a super-2 number, since 2×20203000031² (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 = 20202999976 and 20203000021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20203000001) 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 3 ways as a sum of consecutive naturals, for example, 58390001 + ... + 58390346.

It is an arithmetic number, because the mean of its divisors is an integer number (5079945138).

Almost surely, 2^20203000031 is an apocalyptic number.

20203000031 is a deficient number, since it is larger than the sum of its proper divisors (116780521).

20203000031 is a wasteful number, since it uses less digits than its factorization.

20203000031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116780520.

The product of its (nonzero) digits is 36, while the sum is 11.

Adding to 20203000031 its reverse (13000030202), we get a palindrome (33203030233).

The spelling of 20203000031 in words is "twenty billion, two hundred three million, thirty-one", and thus it is an aban number.