201223312023 has 16 divisors (see below), whose sum is σ = 270145929600. Its totient is φ = 133225101984.

The previous prime is 201223312009. The next prime is 201223312051. The reversal of 201223312023 is 320213322102.

It is a happy number.

It is not a de Polignac number, because 201223312023 - 2¹² = 201223307927 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201223312063) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2718340 + ... + 2791382.

It is an arithmetic number, because the mean of its divisors is an integer number (16884120600).

Almost surely, 2^201223312023 is an apocalyptic number.

201223312023 is a deficient number, since it is larger than the sum of its proper divisors (68922617577).

201223312023 is a wasteful number, since it uses less digits than its factorization.

201223312023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79358.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 201223312023 its reverse (320213322102), we get a palindrome (521436634125).

The spelling of 201223312023 in words is "two hundred one billion, two hundred twenty-three million, three hundred twelve thousand, twenty-three".