20004305131 has 8 divisors (see below), whose sum is σ = 20922499584. Its totient is φ = 19090147560.

The previous prime is 20004305129. The next prime is 20004305143. The reversal of 20004305131 is 13150340002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20004305131 - 2¹ = 20004305129 is a prime.

It is a super-2 number, since 2×20004305131² (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 = 20004305099 and 20004305108.

It is not an unprimeable number, because it can be changed into a prime (20004305831) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 999081 + ... + 1018906.

It is an arithmetic number, because the mean of its divisors is an integer number (2615312448).

Almost surely, 2^20004305131 is an apocalyptic number.

20004305131 is a deficient number, since it is larger than the sum of its proper divisors (918194453).

20004305131 is a wasteful number, since it uses less digits than its factorization.

20004305131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2018441.

The product of its (nonzero) digits is 360, while the sum is 19.

Adding to 20004305131 its reverse (13150340002), we get a palindrome (33154645133).

The spelling of 20004305131 in words is "twenty billion, four million, three hundred five thousand, one hundred thirty-one".