20311441443 has 16 divisors (see below), whose sum is σ = 30132444160. Its totient is φ = 13522322088.

The previous prime is 20311441439. The next prime is 20311441471. The reversal of 20311441443 is 34414411302.

20311441443 is a `hidden beast` number, since 203 + 1 + 1 + 4 + 414 + 43 = 666.

It is not a de Polignac number, because 20311441443 - 2² = 20311441439 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20311445443) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 497755 + ... + 537012.

It is an arithmetic number, because the mean of its divisors is an integer number (1883277760).

Almost surely, 2^20311441443 is an apocalyptic number.

20311441443 is a deficient number, since it is larger than the sum of its proper divisors (9821002717).

20311441443 is a wasteful number, since it uses less digits than its factorization.

20311441443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1035503 (or 1035497 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

Adding to 20311441443 its reverse (34414411302), we get a palindrome (54725852745).

The spelling of 20311441443 in words is "twenty billion, three hundred eleven million, four hundred forty-one thousand, four hundred forty-three".