23846931221 has 2 divisors, whose sum is σ = 23846931222. Its totient is φ = 23846931220.

The previous prime is 23846931193. The next prime is 23846931287. The reversal of 23846931221 is 12213964832.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16252680196 + 7594251025 = 127486^2 + 87145^2 .

It is a cyclic number.

It is not a de Polignac number, because 23846931221 - 2¹⁰ = 23846930197 is a prime.

It is a super-2 number, since 2×23846931221² (a number of 22 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23846933221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11923465610 + 11923465611.

It is an arithmetic number, because the mean of its divisors is an integer number (11923465611).

Almost surely, 2^23846931221 is an apocalyptic number.

It is an amenable number.

23846931221 is a deficient number, since it is larger than the sum of its proper divisors (1).

23846931221 is an equidigital number, since it uses as much as digits as its factorization.

23846931221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 124416, while the sum is 41.

The spelling of 23846931221 in words is "twenty-three billion, eight hundred forty-six million, nine hundred thirty-one thousand, two hundred twenty-one".