20104012031 has 16 divisors (see below), whose sum is σ = 21398580000. Its totient is φ = 18822156288.

The previous prime is 20104012013. The next prime is 20104012057. The reversal of 20104012031 is 13021040102.

It is not a de Polignac number, because 20104012031 - 2¹⁴ = 20103995647 is a prime.

It is a super-2 number, since 2×20104012031² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20104011997 and 20104012015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20104012091) 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, 2624495 + ... + 2632143.

It is an arithmetic number, because the mean of its divisors is an integer number (1337411250).

Almost surely, 2^20104012031 is an apocalyptic number.

20104012031 is a deficient number, since it is larger than the sum of its proper divisors (1294567969).

20104012031 is a wasteful number, since it uses less digits than its factorization.

20104012031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8458.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 20104012031 its reverse (13021040102), we get a palindrome (33125052133).

The spelling of 20104012031 in words is "twenty billion, one hundred four million, twelve thousand, thirty-one".