43122031 has 2 divisors, whose sum is σ = 43122032. Its totient is φ = 43122030.

The previous prime is 43122017. The next prime is 43122041. The reversal of 43122031 is 13022134.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 43122031 - 2⁵ = 43121999 is a prime.

It is a super-2 number, since 2×43122031² = 3719019115129922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 43121996 and 43122014.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43122041) 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, 21561015 + 21561016.

It is an arithmetic number, because the mean of its divisors is an integer number (21561016).

Almost surely, 2^43122031 is an apocalyptic number.

43122031 is a deficient number, since it is larger than the sum of its proper divisors (1).

43122031 is an equidigital number, since it uses as much as digits as its factorization.

43122031 is an odious number, because the sum of its binary digits is odd.

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

The square root of 43122031 is about 6566.7367085943. The cubic root of 43122031 is about 350.6709063318.

Adding to 43122031 its reverse (13022134), we get a palindrome (56144165).

The spelling of 43122031 in words is "forty-three million, one hundred twenty-two thousand, thirty-one".