2031520005 has 12 divisors (see below), whose sum is σ = 3521301420. Its totient is φ = 1083477312.

The previous prime is 2031519983. The next prime is 2031520021. The reversal of 2031520005 is 5000251302.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 308107809 + 1723412196 = 17553^2 + 41514^2 .

It is not a de Polignac number, because 2031520005 - 2¹² = 2031515909 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2031520005.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22572400 + ... + 22572489.

It is an arithmetic number, because the mean of its divisors is an integer number (293441785).

Almost surely, 2^2031520005 is an apocalyptic number.

It is an amenable number.

2031520005 is a deficient number, since it is larger than the sum of its proper divisors (1489781415).

2031520005 is a wasteful number, since it uses less digits than its factorization.

2031520005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45144900 (or 45144897 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 18.

The square root of 2031520005 is about 45072.3862802936. The cubic root of 2031520005 is about 1266.5053667721.

Adding to 2031520005 its reverse (5000251302), we get a palindrome (7031771307).

The spelling of 2031520005 in words is "two billion, thirty-one million, five hundred twenty thousand, five".