23043440321 has 8 divisors (see below), whose sum is σ = 25283608704. Its totient is φ = 20827490320.

The previous prime is 23043440317. The next prime is 23043440327. The reversal of 23043440321 is 12304434032.

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 23043440321 - 2² = 23043440317 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23043440327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6052601 + ... + 6056406.

It is an arithmetic number, because the mean of its divisors is an integer number (3160451088).

Almost surely, 2^23043440321 is an apocalyptic number.

It is an amenable number.

23043440321 is a deficient number, since it is larger than the sum of its proper divisors (2240168383).

23043440321 is a wasteful number, since it uses less digits than its factorization.

23043440321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12109191.

The product of its (nonzero) digits is 6912, while the sum is 26.

Adding to 23043440321 its reverse (12304434032), we get a palindrome (35347874353).

It can be divided in two parts, 23043 and 440321, that added together give a palindrome (463364).

The spelling of 23043440321 in words is "twenty-three billion, forty-three million, four hundred forty thousand, three hundred twenty-one".