23820311 has 2 divisors, whose sum is σ = 23820312. Its totient is φ = 23820310.

The previous prime is 23820299. The next prime is 23820343. The reversal of 23820311 is 11302832.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 23820311 - 2¹⁸ = 23558167 is a prime.

It is a super-2 number, since 2×23820311² = 1134814432273442, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23820611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11910155 + 11910156.

It is an arithmetic number, because the mean of its divisors is an integer number (11910156).

Almost surely, 2^23820311 is an apocalyptic number.

23820311 is a deficient number, since it is larger than the sum of its proper divisors (1).

23820311 is an equidigital number, since it uses as much as digits as its factorization.

23820311 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 23820311 is about 4880.6055976692. The cubic root of 23820311 is about 287.7282311217.

The spelling of 23820311 in words is "twenty-three million, eight hundred twenty thousand, three hundred eleven".