20004041431 has 4 divisors (see below), whose sum is σ = 21822590664. Its totient is φ = 18185492200.

The previous prime is 20004041417. The next prime is 20004041443. The reversal of 20004041431 is 13414040002.

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 20004041431 - 2⁷ = 20004041303 is a prime.

It is a super-2 number, since 2×20004041431² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20004041399 and 20004041408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20004041411) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 909274600 + ... + 909274621.

It is an arithmetic number, because the mean of its divisors is an integer number (5455647666).

Almost surely, 2^20004041431 is an apocalyptic number.

20004041431 is a deficient number, since it is larger than the sum of its proper divisors (1818549233).

20004041431 is a wasteful number, since it uses less digits than its factorization.

20004041431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1818549232.

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 20004041431 its reverse (13414040002), we get a palindrome (33418081433).

The spelling of 20004041431 in words is "twenty billion, four million, forty-one thousand, four hundred thirty-one".