43220431019 has 2 divisors, whose sum is σ = 43220431020. Its totient is φ = 43220431018.

The previous prime is 43220430991. The next prime is 43220431021. The reversal of 43220431019 is 91013402234.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 43220431019 - 2¹² = 43220426923 is a prime.

It is a super-2 number, since 2×43220431019² (a number of 22 digits) contains 22 as substring.

Together with 43220431021, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 43220430982 and 43220431000.

It is not a weakly prime, because it can be changed into another prime (43220431519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21610215509 + 21610215510.

It is an arithmetic number, because the mean of its divisors is an integer number (21610215510).

Almost surely, 2^43220431019 is an apocalyptic number.

43220431019 is a deficient number, since it is larger than the sum of its proper divisors (1).

43220431019 is an equidigital number, since it uses as much as digits as its factorization.

43220431019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 29.

The spelling of 43220431019 in words is "forty-three billion, two hundred twenty million, four hundred thirty-one thousand, nineteen".