31232321351223 has 4 divisors (see below), whose sum is σ = 41643095134968. Its totient is φ = 20821547567480.

The previous prime is 31232321351221. The next prime is 31232321351227. The reversal of 31232321351223 is 32215312323213.

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

It is a cyclic number.

It is not a de Polignac number, because 31232321351223 - 2¹ = 31232321351221 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31232321351221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5205386891868 + ... + 5205386891873.

It is an arithmetic number, because the mean of its divisors is an integer number (10410773783742).

Almost surely, 2^{31232321351223} is an apocalyptic number.

31232321351223 is a deficient number, since it is larger than the sum of its proper divisors (10410773783745).

31232321351223 is a wasteful number, since it uses less digits than its factorization.

31232321351223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10410773783744.

The product of its digits is 38880, while the sum is 33.

Adding to 31232321351223 its reverse (32215312323213), we get a palindrome (63447633674436).

The spelling of 31232321351223 in words is "thirty-one trillion, two hundred thirty-two billion, three hundred twenty-one million, three hundred fifty-one thousand, two hundred twenty-three".