20431012355103 has 8 divisors (see below), whose sum is σ = 31132971207808. Its totient is φ = 11674864202904.

The previous prime is 20431012355101. The next prime is 20431012355189. The reversal of 20431012355103 is 30155321013402.

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

It is not a de Polignac number, because 20431012355103 - 2¹ = 20431012355101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20431012355101) 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, 486452675101 + ... + 486452675142.

It is an arithmetic number, because the mean of its divisors is an integer number (3891621400976).

Almost surely, 2^{20431012355103} is an apocalyptic number.

20431012355103 is a deficient number, since it is larger than the sum of its proper divisors (10701958852705).

20431012355103 is an equidigital number, since it uses as much as digits as its factorization.

20431012355103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 972905350253.

The product of its (nonzero) digits is 10800, while the sum is 30.

Adding to 20431012355103 its reverse (30155321013402), we get a palindrome (50586333368505).

The spelling of 20431012355103 in words is "twenty trillion, four hundred thirty-one billion, twelve million, three hundred fifty-five thousand, one hundred three".