20131032223 has 4 divisors (see below), whose sum is σ = 20155916880. Its totient is φ = 20106147568.

The previous prime is 20131032203. The next prime is 20131032227. The reversal of 20131032223 is 32223013102.

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 20131032223 - 2⁵ = 20131032191 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20131032223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20131032227) 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, 12441115 + ... + 12442732.

It is an arithmetic number, because the mean of its divisors is an integer number (5038979220).

Almost surely, 2^20131032223 is an apocalyptic number.

20131032223 is a deficient number, since it is larger than the sum of its proper divisors (24884657).

20131032223 is an equidigital number, since it uses as much as digits as its factorization.

20131032223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24884656.

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 20131032223 its reverse (32223013102), we get a palindrome (52354045325).

The spelling of 20131032223 in words is "twenty billion, one hundred thirty-one million, thirty-two thousand, two hundred twenty-three".