23981675321 has 2 divisors, whose sum is σ = 23981675322. Its totient is φ = 23981675320.

The previous prime is 23981675293. The next prime is 23981675353. The reversal of 23981675321 is 12357618932.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16949175721 + 7032499600 = 130189^2 + 83860^2 .

It is a cyclic number.

It is not a de Polignac number, because 23981675321 - 2⁶ = 23981675257 is a prime.

It is not a weakly prime, because it can be changed into another prime (23981675371) 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 as a sum of consecutive naturals, namely, 11990837660 + 11990837661.

It is an arithmetic number, because the mean of its divisors is an integer number (11990837661).

Almost surely, 2^23981675321 is an apocalyptic number.

It is an amenable number.

23981675321 is a deficient number, since it is larger than the sum of its proper divisors (1).

23981675321 is an equidigital number, since it uses as much as digits as its factorization.

23981675321 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 544320, while the sum is 47.

The spelling of 23981675321 in words is "twenty-three billion, nine hundred eighty-one million, six hundred seventy-five thousand, three hundred twenty-one".