21312223242023 has 8 divisors (see below), whose sum is σ = 24373752791040. Its totient is φ = 18254925250200.

The previous prime is 21312223241987. The next prime is 21312223242031. The reversal of 21312223242023 is 32024232221312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21312223242023 - 2¹⁴ = 21312223225639 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21312223242043) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1057878503 + ... + 1057898648.

It is an arithmetic number, because the mean of its divisors is an integer number (3046719098880).

Almost surely, 2^{21312223242023} is an apocalyptic number.

21312223242023 is a deficient number, since it is larger than the sum of its proper divisors (3061529549017).

21312223242023 is a wasteful number, since it uses less digits than its factorization.

21312223242023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2115778597.

The product of its (nonzero) digits is 13824, while the sum is 29.

Adding to 21312223242023 its reverse (32024232221312), we get a palindrome (53336455463335).

The spelling of 21312223242023 in words is "twenty-one trillion, three hundred twelve billion, two hundred twenty-three million, two hundred forty-two thousand, twenty-three".