2005230531 has 16 divisors (see below), whose sum is σ = 2819802240. Its totient is φ = 1264011840.

The previous prime is 2005230509. The next prime is 2005230553. The reversal of 2005230531 is 1350325002.

It is an interprime number because it is at equal distance from previous prime (2005230509) and next prime (2005230553).

It is not a de Polignac number, because 2005230531 - 2¹¹ = 2005228483 is a prime.

It is a super-2 number, since 2×2005230531² = 8041898964909083922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2005230498 and 2005230507.

It is not an unprimeable number, because it can be changed into a prime (2005230571) 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 15 ways as a sum of consecutive naturals, for example, 4065 + ... + 63458.

It is an arithmetic number, because the mean of its divisors is an integer number (176237640).

Almost surely, 2^2005230531 is an apocalyptic number.

2005230531 is a deficient number, since it is larger than the sum of its proper divisors (814571709).

2005230531 is a wasteful number, since it uses less digits than its factorization.

2005230531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68066.

The product of its (nonzero) digits is 900, while the sum is 21.

The square root of 2005230531 is about 44779.8004796806. The cubic root of 2005230531 is about 1261.0184364825.

Adding to 2005230531 its reverse (1350325002), we get a palindrome (3355555533).

The spelling of 2005230531 in words is "two billion, five million, two hundred thirty thousand, five hundred thirty-one".