43100231 has 2 divisors, whose sum is σ = 43100232. Its totient is φ = 43100230.

The previous prime is 43100209. The next prime is 43100243. The reversal of 43100231 is 13200134.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-43100231 is a prime.

It is a super-2 number, since 2×43100231² = 3715259824506722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43100731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21550115 + 21550116.

It is an arithmetic number, because the mean of its divisors is an integer number (21550116).

Almost surely, 2^43100231 is an apocalyptic number.

43100231 is a deficient number, since it is larger than the sum of its proper divisors (1).

43100231 is an equidigital number, since it uses as much as digits as its factorization.

43100231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 43100231 is about 6565.0766179840. The cubic root of 43100231 is about 350.6118034079.

Adding to 43100231 its reverse (13200134), we get a palindrome (56300365).

The spelling of 43100231 in words is "forty-three million, one hundred thousand, two hundred thirty-one".