20140104431 has 4 divisors (see below), whose sum is σ = 20149053864. Its totient is φ = 20131155000.

The previous prime is 20140104427. The next prime is 20140104437. The reversal of 20140104431 is 13440104102.

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 20140104431 - 2² = 20140104427 is a prime.

It is a super-2 number, since 2×20140104431² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20140104437) 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, 4471340 + ... + 4475841.

It is an arithmetic number, because the mean of its divisors is an integer number (5037263466).

Almost surely, 2^20140104431 is an apocalyptic number.

20140104431 is a deficient number, since it is larger than the sum of its proper divisors (8949433).

20140104431 is an equidigital number, since it uses as much as digits as its factorization.

20140104431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8949432.

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

Adding to 20140104431 its reverse (13440104102), we get a palindrome (33580208533).

The spelling of 20140104431 in words is "twenty billion, one hundred forty million, one hundred four thousand, four hundred thirty-one".