20301223043 has 4 divisors (see below), whose sum is σ = 20604226440. Its totient is φ = 19998219648.

The previous prime is 20301223039. The next prime is 20301223087. The reversal of 20301223043 is 34032210302.

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 20301223043 - 2² = 20301223039 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20301223643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 151501598 + ... + 151501731.

It is an arithmetic number, because the mean of its divisors is an integer number (5151056610).

Almost surely, 2^20301223043 is an apocalyptic number.

20301223043 is a deficient number, since it is larger than the sum of its proper divisors (303003397).

20301223043 is an equidigital number, since it uses as much as digits as its factorization.

20301223043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 303003396.

The product of its (nonzero) digits is 864, while the sum is 20.

Adding to 20301223043 its reverse (34032210302), we get a palindrome (54333433345).

The spelling of 20301223043 in words is "twenty billion, three hundred one million, two hundred twenty-three thousand, forty-three".