20223131232321 has 24 divisors (see below), whose sum is σ = 29513771434784. Its totient is φ = 13342447837440.

The previous prime is 20223131232289. The next prime is 20223131232373. The reversal of 20223131232321 is 12323213132202.

20223131232321 is a `hidden beast` number, since 2 + 0 + 2 + 2 + 3 + 1 + 312 + 323 + 21 = 666.

It is not a de Polignac number, because 20223131232321 - 2⁵ = 20223131232289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20223131232391) 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, 17733786 + ... + 18839676.

Almost surely, 2^{20223131232321} is an apocalyptic number.

It is an amenable number.

20223131232321 is a deficient number, since it is larger than the sum of its proper divisors (9290640202463).

20223131232321 is a wasteful number, since it uses less digits than its factorization.

20223131232321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1126941 (or 1126938 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

Adding to 20223131232321 its reverse (12323213132202), we get a palindrome (32546344364523).

The spelling of 20223131232321 in words is "twenty trillion, two hundred twenty-three billion, one hundred thirty-one million, two hundred thirty-two thousand, three hundred twenty-one".