2321530531 has 2 divisors, whose sum is σ = 2321530532. Its totient is φ = 2321530530.

The previous prime is 2321530499. The next prime is 2321530567. The reversal of 2321530531 is 1350351232.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2321530531 - 2⁵ = 2321530499 is a prime.

It is a super-2 number, since 2×2321530531² = 10779008012730283922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2321530496 and 2321530505.

It is not a weakly prime, because it can be changed into another prime (2328530531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1160765265 + 1160765266.

It is an arithmetic number, because the mean of its divisors is an integer number (1160765266).

Almost surely, 2^2321530531 is an apocalyptic number.

2321530531 is a deficient number, since it is larger than the sum of its proper divisors (1).

2321530531 is an equidigital number, since it uses as much as digits as its factorization.

2321530531 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2700, while the sum is 25.

The square root of 2321530531 is about 48182.2636558309. The cubic root of 2321530531 is about 1324.1122390268.

Adding to 2321530531 its reverse (1350351232), we get a palindrome (3671881763).

The spelling of 2321530531 in words is "two billion, three hundred twenty-one million, five hundred thirty thousand, five hundred thirty-one".