23212021343 has 4 divisors (see below), whose sum is σ = 26528024400. Its totient is φ = 19896018288.

The previous prime is 23212021331. The next prime is 23212021387. The reversal of 23212021343 is 34312021232.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23212021343 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 (23212029343) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1658001518 + ... + 1658001531.

It is an arithmetic number, because the mean of its divisors is an integer number (6632006100).

Almost surely, 2^23212021343 is an apocalyptic number.

23212021343 is a deficient number, since it is larger than the sum of its proper divisors (3316003057).

23212021343 is an equidigital number, since it uses as much as digits as its factorization.

23212021343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3316003056.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 23212021343 its reverse (34312021232), we get a palindrome (57524042575).

The spelling of 23212021343 in words is "twenty-three billion, two hundred twelve million, twenty-one thousand, three hundred forty-three".