23076821 has 2 divisors, whose sum is σ = 23076822. Its totient is φ = 23076820.

The previous prime is 23076799. The next prime is 23076827. The reversal of 23076821 is 12867032.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22372900 + 703921 = 4730^2 + 839^2 .

It is a cyclic number.

It is not a de Polignac number, because 23076821 - 2¹⁰ = 23075797 is a prime.

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 (23076827) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11538410 + 11538411.

It is an arithmetic number, because the mean of its divisors is an integer number (11538411).

Almost surely, 2^23076821 is an apocalyptic number.

It is an amenable number.

23076821 is a deficient number, since it is larger than the sum of its proper divisors (1).

23076821 is an equidigital number, since it uses as much as digits as its factorization.

23076821 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 23076821 is about 4803.8339896379. The cubic root of 23076821 is about 284.7029674401.

The spelling of 23076821 in words is "twenty-three million, seventy-six thousand, eight hundred twenty-one".