43223101 has 2 divisors, whose sum is σ = 43223102. Its totient is φ = 43223100.

The previous prime is 43223099. The next prime is 43223111. The reversal of 43223101 is 10132234.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 43217476 + 5625 = 6574^2 + 75^2 .

It is a cyclic number.

It is not a de Polignac number, because 43223101 - 2¹ = 43223099 is a prime.

Together with 43223099, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43223111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21611550 + 21611551.

It is an arithmetic number, because the mean of its divisors is an integer number (21611551).

Almost surely, 2^43223101 is an apocalyptic number.

It is an amenable number.

43223101 is a deficient number, since it is larger than the sum of its proper divisors (1).

43223101 is an equidigital number, since it uses as much as digits as its factorization.

43223101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 43223101 is about 6574.4278078020. The cubic root of 43223101 is about 350.9446616384.

Adding to 43223101 its reverse (10132234), we get a palindrome (53355335).

The spelling of 43223101 in words is "forty-three million, two hundred twenty-three thousand, one hundred one".