23520811 has 2 divisors, whose sum is σ = 23520812. Its totient is φ = 23520810.

The previous prime is 23520793. The next prime is 23520853. The reversal of 23520811 is 11802532.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 23520811 - 2¹¹ = 23518763 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (23520311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11760405 + 11760406.

It is an arithmetic number, because the mean of its divisors is an integer number (11760406).

Almost surely, 2^23520811 is an apocalyptic number.

23520811 is a deficient number, since it is larger than the sum of its proper divisors (1).

23520811 is an equidigital number, since it uses as much as digits as its factorization.

23520811 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 23520811 is about 4849.8258731629. The cubic root of 23520811 is about 286.5172433522.

The spelling of 23520811 in words is "twenty-three million, five hundred twenty thousand, eight hundred eleven".