20131012223 has 64 divisors (see below), whose sum is σ = 25343262720. Its totient is φ = 15619709952.

The previous prime is 20131012217. The next prime is 20131012241. The reversal of 20131012223 is 32221013102.

It is not a de Polignac number, because 20131012223 - 2¹² = 20131008127 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 (20131042223) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 29912015 + ... + 29912687.

It is an arithmetic number, because the mean of its divisors is an integer number (395988480).

Almost surely, 2^20131012223 is an apocalyptic number.

20131012223 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

20131012223 is a deficient number, since it is larger than the sum of its proper divisors (5212250497).

20131012223 is a wasteful number, since it uses less digits than its factorization.

20131012223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 876.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 20131012223 its reverse (32221013102), we get a palindrome (52352025325).

The spelling of 20131012223 in words is "twenty billion, one hundred thirty-one million, twelve thousand, two hundred twenty-three".