20312110223233 has 4 divisors (see below), whose sum is σ = 20377005144388. Its totient is φ = 20247215302080.

The previous prime is 20312110223221. The next prime is 20312110223291. The reversal of 20312110223233 is 33232201121302.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 836023121649 + 19476087101584 = 914343^2 + 4413172^2 .

It is a cyclic number.

It is not a de Polignac number, because 20312110223233 - 2⁵ = 20312110223201 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20312110223198 and 20312110223207.

It is not an unprimeable number, because it can be changed into a prime (20312110223213) 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, 32447460108 + ... + 32447460733.

It is an arithmetic number, because the mean of its divisors is an integer number (5094251286097).

Almost surely, 2^{20312110223233} is an apocalyptic number.

It is an amenable number.

20312110223233 is a deficient number, since it is larger than the sum of its proper divisors (64894921155).

20312110223233 is an equidigital number, since it uses as much as digits as its factorization.

20312110223233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64894921154.

The product of its (nonzero) digits is 2592, while the sum is 25.

Adding to 20312110223233 its reverse (33232201121302), we get a palindrome (53544311344535).

The spelling of 20312110223233 in words is "twenty trillion, three hundred twelve billion, one hundred ten million, two hundred twenty-three thousand, two hundred thirty-three".