231500041 has 2 divisors, whose sum is σ = 231500042. Its totient is φ = 231500040.

The previous prime is 231500039. The next prime is 231500053. The reversal of 231500041 is 140005132.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 185531641 + 45968400 = 13621^2 + 6780^2 .

It is a cyclic number.

It is not a de Polignac number, because 231500041 - 2¹ = 231500039 is a prime.

Together with 231500039, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 231499988 and 231500024.

It is not a weakly prime, because it can be changed into another prime (231500341) by changing a digit.

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 as a sum of consecutive naturals, namely, 115750020 + 115750021.

It is an arithmetic number, because the mean of its divisors is an integer number (115750021).

Almost surely, 2^231500041 is an apocalyptic number.

It is an amenable number.

231500041 is a deficient number, since it is larger than the sum of its proper divisors (1).

231500041 is an equidigital number, since it uses as much as digits as its factorization.

231500041 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 231500041 is about 15215.1254020465. The cubic root of 231500041 is about 614.0216590591.

Adding to 231500041 its reverse (140005132), we get a palindrome (371505173).

The spelling of 231500041 in words is "two hundred thirty-one million, five hundred thousand, forty-one".