21344230031223 has 16 divisors (see below), whose sum is σ = 31046995380096. Its totient is φ = 12935545902240.

The previous prime is 21344230031207. The next prime is 21344230031233. The reversal of 21344230031223 is 32213003244312.

It is a happy number.

It is not a de Polignac number, because 21344230031223 - 2⁴ = 21344230031207 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21344230031233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7540240 + ... + 9977157.

It is an arithmetic number, because the mean of its divisors is an integer number (1940437211256).

Almost surely, 2^{21344230031223} is an apocalyptic number.

21344230031223 is a deficient number, since it is larger than the sum of its proper divisors (9702765348873).

21344230031223 is a wasteful number, since it uses less digits than its factorization.

21344230031223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17554334.

The product of its (nonzero) digits is 20736, while the sum is 30.

Adding to 21344230031223 its reverse (32213003244312), we get a palindrome (53557233275535).

The spelling of 21344230031223 in words is "twenty-one trillion, three hundred forty-four billion, two hundred thirty million, thirty-one thousand, two hundred twenty-three".