20000231005 has 4 divisors (see below), whose sum is σ = 24000277212. Its totient is φ = 16000184800.

The previous prime is 20000230981. The next prime is 20000231039. The reversal of 20000231005 is 50013200002.

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

It can be written as a sum of positive squares in 2 ways, for example, as 15079348804 + 4920882201 = 122798^2 + 70149^2 .

It is not a de Polignac number, because 20000231005 - 2¹¹ = 20000228957 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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, 2000023096 + ... + 2000023105.

It is an arithmetic number, because the mean of its divisors is an integer number (6000069303).

Almost surely, 2^20000231005 is an apocalyptic number.

It is an amenable number.

20000231005 is a deficient number, since it is larger than the sum of its proper divisors (4000046207).

20000231005 is an equidigital number, since it uses as much as digits as its factorization.

20000231005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4000046206.

The product of its (nonzero) digits is 60, while the sum is 13.

Adding to 20000231005 its reverse (50013200002), we get a palindrome (70013431007).

The spelling of 20000231005 in words is "twenty billion, two hundred thirty-one thousand, five".