23404340243 has 4 divisors (see below), whose sum is σ = 23404928688. Its totient is φ = 23403751800.

The previous prime is 23404340233. The next prime is 23404340341. The reversal of 23404340243 is 34204340432.

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 23404340243 - 2¹⁰ = 23404339219 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23404340203) 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, 229871 + ... + 315672.

It is an arithmetic number, because the mean of its divisors is an integer number (5851232172).

Almost surely, 2^23404340243 is an apocalyptic number.

23404340243 is a deficient number, since it is larger than the sum of its proper divisors (588445).

23404340243 is an equidigital number, since it uses as much as digits as its factorization.

23404340243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 588444.

The product of its (nonzero) digits is 27648, while the sum is 29.

Adding to 23404340243 its reverse (34204340432), we get a palindrome (57608680675).

The spelling of 23404340243 in words is "twenty-three billion, four hundred four million, three hundred forty thousand, two hundred forty-three".