201322231023 has 32 divisors (see below), whose sum is σ = 281628135360. Its totient is φ = 127793756160.

The previous prime is 201322231021. The next prime is 201322231049. The reversal of 201322231023 is 320132223102.

It is a happy number.

It is not a de Polignac number, because 201322231023 - 2¹ = 201322231021 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201322231021) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1258423 + ... + 1409351.

It is an arithmetic number, because the mean of its divisors is an integer number (8800879230).

Almost surely, 2^201322231023 is an apocalyptic number.

201322231023 is a deficient number, since it is larger than the sum of its proper divisors (80305904337).

201322231023 is a wasteful number, since it uses less digits than its factorization.

201322231023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151227.

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

Adding to 201322231023 its reverse (320132223102), we get a palindrome (521454454125).

It can be divided in two parts, 20132223102 and 3, that multiplied together give a palindrome (60396669306).

The spelling of 201322231023 in words is "two hundred one billion, three hundred twenty-two million, two hundred thirty-one thousand, twenty-three".