20104000031 has 16 divisors (see below), whose sum is σ = 20563788000. Its totient is φ = 19648742400.

The previous prime is 20104000001. The next prime is 20104000039. The reversal of 20104000031 is 13000040102.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 20104000031 - 2²⁶ = 20036891167 is a prime.

It is a super-2 number, since 2×20104000031² (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 = 20103999976 and 20104000021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20104000039) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13500935 + ... + 13502423.

It is an arithmetic number, because the mean of its divisors is an integer number (1285236750).

Almost surely, 2^20104000031 is an apocalyptic number.

20104000031 is a deficient number, since it is larger than the sum of its proper divisors (459787969).

20104000031 is a wasteful number, since it uses less digits than its factorization.

20104000031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2810.

The product of its (nonzero) digits is 24, while the sum is 11.

Adding to 20104000031 its reverse (13000040102), we get a palindrome (33104040133).

The spelling of 20104000031 in words is "twenty billion, one hundred four million, thirty-one", and thus it is an aban number.