20431102044205 has 8 divisors (see below), whose sum is σ = 25362747365400. Its totient is φ = 15781265027136.

The previous prime is 20431102044193. The next prime is 20431102044209. The reversal of 20431102044205 is 50244020113402.

It can be written as a sum of positive squares in 4 ways, for example, as 1370998729 + 20429731045476 = 37027^2 + 4519926^2 .

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 20431102044205 - 2²¹ = 20431099947053 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20431102044209) 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, 70452075870 + ... + 70452076159.

It is an arithmetic number, because the mean of its divisors is an integer number (3170343420675).

Almost surely, 2^{20431102044205} is an apocalyptic number.

It is an amenable number.

20431102044205 is a deficient number, since it is larger than the sum of its proper divisors (4931645321195).

20431102044205 is a wasteful number, since it uses less digits than its factorization.

20431102044205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140904152063.

The product of its (nonzero) digits is 7680, while the sum is 28.

Adding to 20431102044205 its reverse (50244020113402), we get a palindrome (70675122157607).

The spelling of 20431102044205 in words is "twenty trillion, four hundred thirty-one billion, one hundred two million, forty-four thousand, two hundred five".