20431204004 has 12 divisors (see below), whose sum is σ = 36987524700. Its totient is φ = 9863339808.

The previous prime is 20431203983. The next prime is 20431204039. The reversal of 20431204004 is 40040213402.

It can be written as a sum of positive squares in 2 ways, for example, as 14921111104 + 5510092900 = 122152^2 + 74230^2 .

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 88065419 + ... + 88065650.

It is an arithmetic number, because the mean of its divisors is an integer number (3082293725).

Almost surely, 2^20431204004 is an apocalyptic number.

It is an amenable number.

20431204004 is a deficient number, since it is larger than the sum of its proper divisors (16556320696).

20431204004 is a wasteful number, since it uses less digits than its factorization.

20431204004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176131102 (or 176131100 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

Adding to 20431204004 its reverse (40040213402), we get a palindrome (60471417406).

The spelling of 20431204004 in words is "twenty billion, four hundred thirty-one million, two hundred four thousand, four".