20311446443 has 8 divisors (see below), whose sum is σ = 21651110400. Its totient is φ = 18998846568.

The previous prime is 20311446437. The next prime is 20311446451. The reversal of 20311446443 is 34464411302.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20311446443 - 2¹⁴ = 20311430059 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20311446403) 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 7 ways as a sum of consecutive naturals, for example, 6764471 + ... + 6767472.

It is an arithmetic number, because the mean of its divisors is an integer number (2706388800).

Almost surely, 2^20311446443 is an apocalyptic number.

20311446443 is a deficient number, since it is larger than the sum of its proper divisors (1339663957).

20311446443 is a wasteful number, since it uses less digits than its factorization.

20311446443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13532041.

The product of its (nonzero) digits is 27648, while the sum is 32.

Adding to 20311446443 its reverse (34464411302), we get a palindrome (54775857745).

The spelling of 20311446443 in words is "twenty billion, three hundred eleven million, four hundred forty-six thousand, four hundred forty-three".