20144431001 has 4 divisors (see below), whose sum is σ = 20144788404. Its totient is φ = 20144073600.

The previous prime is 20144430967. The next prime is 20144431003. The reversal of 20144431001 is 10013444102.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 10013444102 = 2 ⋅5006722051.

It can be written as a sum of positive squares in 2 ways, for example, as 7340376976 + 12804054025 = 85676^2 + 113155^2 .

It is a cyclic number.

It is not a de Polignac number, because 20144431001 - 2¹⁴ = 20144414617 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20144431003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73520 + ... + 213761.

It is an arithmetic number, because the mean of its divisors is an integer number (5036197101).

Almost surely, 2^20144431001 is an apocalyptic number.

It is an amenable number.

20144431001 is a deficient number, since it is larger than the sum of its proper divisors (357403).

20144431001 is an equidigital number, since it uses as much as digits as its factorization.

20144431001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 357402.

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 20144431001 its reverse (10013444102), we get a palindrome (30157875103).

The spelling of 20144431001 in words is "twenty billion, one hundred forty-four million, four hundred thirty-one thousand, one".