220320043431 has 4 divisors (see below), whose sum is σ = 293760057912. Its totient is φ = 146880028952.

The previous prime is 220320043417. The next prime is 220320043439. The reversal of 220320043431 is 134340023022.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 220320043431 - 2⁷ = 220320043303 is a prime.

It is a super-2 number, since 2×220320043431² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220320043439) 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 in 3 ways as a sum of consecutive naturals, for example, 36720007236 + ... + 36720007241.

It is an arithmetic number, because the mean of its divisors is an integer number (73440014478).

Almost surely, 2^220320043431 is an apocalyptic number.

220320043431 is a deficient number, since it is larger than the sum of its proper divisors (73440014481).

220320043431 is an equidigital number, since it uses as much as digits as its factorization.

220320043431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73440014480.

The product of its (nonzero) digits is 3456, while the sum is 24.

Adding to 220320043431 its reverse (134340023022), we get a palindrome (354660066453).

The spelling of 220320043431 in words is "two hundred twenty billion, three hundred twenty million, forty-three thousand, four hundred thirty-one".