20131022103 has 4 divisors (see below), whose sum is σ = 26841362808. Its totient is φ = 13420681400.

The previous prime is 20131022071. The next prime is 20131022111. The reversal of 20131022103 is 30122013102.

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 20131022103 - 2⁵ = 20131022071 is a prime.

It is a super-2 number, since 2×20131022103² (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 (20131022143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3355170348 + ... + 3355170353.

It is an arithmetic number, because the mean of its divisors is an integer number (6710340702).

Almost surely, 2^20131022103 is an apocalyptic number.

20131022103 is a deficient number, since it is larger than the sum of its proper divisors (6710340705).

20131022103 is an equidigital number, since it uses as much as digits as its factorization.

20131022103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6710340704.

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

Adding to 20131022103 its reverse (30122013102), we get a palindrome (50253035205).

Subtracting 20131022103 from its reverse (30122013102), we obtain a palindrome (9990990999).

The spelling of 20131022103 in words is "twenty billion, one hundred thirty-one million, twenty-two thousand, one hundred three".