20104443231 has 4 divisors (see below), whose sum is σ = 26805924312. Its totient is φ = 13402962152.

The previous prime is 20104443211. The next prime is 20104443263. The reversal of 20104443231 is 13234440102.

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 20104443231 - 2⁵ = 20104443199 is a prime.

It is a super-2 number, since 2×20104443231² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20104443211) 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, 3350740536 + ... + 3350740541.

It is an arithmetic number, because the mean of its divisors is an integer number (6701481078).

Almost surely, 2^20104443231 is an apocalyptic number.

20104443231 is a deficient number, since it is larger than the sum of its proper divisors (6701481081).

20104443231 is an equidigital number, since it uses as much as digits as its factorization.

20104443231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6701481080.

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 20104443231 its reverse (13234440102), we get a palindrome (33338883333).

The spelling of 20104443231 in words is "twenty billion, one hundred four million, four hundred forty-three thousand, two hundred thirty-one".