23240042321 has 8 divisors (see below), whose sum is σ = 24608571624. Its totient is φ = 21871676160.

The previous prime is 23240042317. The next prime is 23240042323. The reversal of 23240042321 is 12324004232.

It can be written as a sum of positive squares in 4 ways, for example, as 1012512400 + 22227529921 = 31820^2 + 149089^2 .

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 23240042321 - 2² = 23240042317 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23240042323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 371891 + ... + 429863.

It is an arithmetic number, because the mean of its divisors is an integer number (3076071453).

Almost surely, 2^23240042321 is an apocalyptic number.

It is an amenable number.

23240042321 is a deficient number, since it is larger than the sum of its proper divisors (1368529303).

23240042321 is a wasteful number, since it uses less digits than its factorization.

23240042321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81571.

The product of its (nonzero) digits is 2304, while the sum is 23.

Adding to 23240042321 its reverse (12324004232), we get a palindrome (35564046553).

The spelling of 23240042321 in words is "twenty-three billion, two hundred forty million, forty-two thousand, three hundred twenty-one".