231324641 has 2 divisors, whose sum is σ = 231324642. Its totient is φ = 231324640.

The previous prime is 231324607. The next prime is 231324671. The reversal of 231324641 is 146423132.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 177449041 + 53875600 = 13321^2 + 7340^2 .

It is a cyclic number.

It is not a de Polignac number, because 231324641 - 2¹⁸ = 231062497 is a prime.

It is a super-2 number, since 2×231324641² = 107022179067557762, which contains 22 as substring.

It is a Sophie Germain 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 231324641.

It is not a weakly prime, because it can be changed into another prime (231324671) 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 as a sum of consecutive naturals, namely, 115662320 + 115662321.

It is an arithmetic number, because the mean of its divisors is an integer number (115662321).

Almost surely, 2^231324641 is an apocalyptic number.

It is an amenable number.

231324641 is a deficient number, since it is larger than the sum of its proper divisors (1).

231324641 is an equidigital number, since it uses as much as digits as its factorization.

231324641 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3456, while the sum is 26.

The square root of 231324641 is about 15209.3603087046. The cubic root of 231324641 is about 613.8665451764.

Adding to 231324641 its reverse (146423132), we get a palindrome (377747773).

The spelling of 231324641 in words is "two hundred thirty-one million, three hundred twenty-four thousand, six hundred forty-one".