20312233023213 has 24 divisors (see below), whose sum is σ = 29446842906936. Its totient is φ = 13492135104000.

The previous prime is 20312233023197. The next prime is 20312233023227. The reversal of 20312233023213 is 31232033221302.

20312233023213 is a `hidden beast` number, since 2 + 0 + 3 + 1 + 2 + 2 + 330 + 2 + 321 + 3 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 512064754569 + 19800168268644 = 715587^2 + 4449738^2 .

It is not a de Polignac number, because 20312233023213 - 2⁴ = 20312233023197 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20312233023283) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 29504431 + ... + 30185027.

It is an arithmetic number, because the mean of its divisors is an integer number (1226951787789).

Almost surely, 2^{20312233023213} is an apocalyptic number.

It is an amenable number.

20312233023213 is a deficient number, since it is larger than the sum of its proper divisors (9134609883723).

20312233023213 is a wasteful number, since it uses less digits than its factorization.

20312233023213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 692685 (or 692682 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 27.

Adding to 20312233023213 its reverse (31232033221302), we get a palindrome (51544266244515).

The spelling of 20312233023213 in words is "twenty trillion, three hundred twelve billion, two hundred thirty-three million, twenty-three thousand, two hundred thirteen".