20131220103 has 8 divisors (see below), whose sum is σ = 26959872768. Its totient is φ = 13361690424.

The previous prime is 20131220093. The next prime is 20131220159. The reversal of 20131220103 is 30102213102.

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

It is not a de Polignac number, because 20131220103 - 2⁸ = 20131219847 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20131220003) 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, 14779951 + ... + 14781312.

It is an arithmetic number, because the mean of its divisors is an integer number (3369984096).

Almost surely, 2^20131220103 is an apocalyptic number.

20131220103 is a deficient number, since it is larger than the sum of its proper divisors (6828652665).

20131220103 is a wasteful number, since it uses less digits than its factorization.

20131220103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29561493.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 20131220103 its reverse (30102213102), we get a palindrome (50233433205).

The spelling of 20131220103 in words is "twenty billion, one hundred thirty-one million, two hundred twenty thousand, one hundred three".