20131223303233 has 8 divisors (see below), whose sum is σ = 23007258053568. Its totient is φ = 17255224979664.

The previous prime is 20131223303221. The next prime is 20131223303263. The reversal of 20131223303233 is 33230332213102.

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

It is a de Polignac number, because none of the positive numbers 2^k-20131223303233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20131223303263) 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, 7911991 + ... + 10142092.

It is an arithmetic number, because the mean of its divisors is an integer number (2875907256696).

Almost surely, 2^{20131223303233} is an apocalyptic number.

It is an amenable number.

20131223303233 is a deficient number, since it is larger than the sum of its proper divisors (2876034750335).

20131223303233 is a wasteful number, since it uses less digits than its factorization.

20131223303233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18213383.

The product of its (nonzero) digits is 11664, while the sum is 28.

Adding to 20131223303233 its reverse (33230332213102), we get a palindrome (53361555516335).

The spelling of 20131223303233 in words is "twenty trillion, one hundred thirty-one billion, two hundred twenty-three million, three hundred three thousand, two hundred thirty-three".