531232243 has 2 divisors, whose sum is σ = 531232244. Its totient is φ = 531232242.

The previous prime is 531232241. The next prime is 531232249. The reversal of 531232243 is 342232135.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 531232243 - 2¹ = 531232241 is a prime.

It is a super-2 number, since 2×531232243² = 564415392005622098, which contains 22 as substring.

Together with 531232241, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (531232241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 265616121 + 265616122.

It is an arithmetic number, because the mean of its divisors is an integer number (265616122).

Almost surely, 2^531232243 is an apocalyptic number.

531232243 is a deficient number, since it is larger than the sum of its proper divisors (1).

531232243 is an equidigital number, since it uses as much as digits as its factorization.

531232243 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4320, while the sum is 25.

The square root of 531232243 is about 23048.4759365994. The cubic root of 531232243 is about 809.8939265660.

Adding to 531232243 its reverse (342232135), we get a palindrome (873464378).

The spelling of 531232243 in words is "five hundred thirty-one million, two hundred thirty-two thousand, two hundred forty-three".