20100231103 has 4 divisors (see below), whose sum is σ = 20102980248. Its totient is φ = 20097481960.

The previous prime is 20100231101. The next prime is 20100231127. The reversal of 20100231103 is 30113200102.

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 20100231103 - 2¹ = 20100231101 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 (20100231101) 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, 1363576 + ... + 1378237.

It is an arithmetic number, because the mean of its divisors is an integer number (5025745062).

Almost surely, 2^20100231103 is an apocalyptic number.

20100231103 is a deficient number, since it is larger than the sum of its proper divisors (2749145).

20100231103 is an equidigital number, since it uses as much as digits as its factorization.

20100231103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2749144.

The product of its (nonzero) digits is 36, while the sum is 13.

Adding to 20100231103 its reverse (30113200102), we get a palindrome (50213431205).

The spelling of 20100231103 in words is "twenty billion, one hundred million, two hundred thirty-one thousand, one hundred three".