23405203 has 2 divisors, whose sum is σ = 23405204. Its totient is φ = 23405202.

The previous prime is 23405183. The next prime is 23405257. The reversal of 23405203 is 30250432.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23405203 is a prime.

It is equal to p_1472122 and since 23405203 and 1472122 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (23405293) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11702601 + 11702602.

It is an arithmetic number, because the mean of its divisors is an integer number (11702602).

Almost surely, 2^23405203 is an apocalyptic number.

23405203 is a deficient number, since it is larger than the sum of its proper divisors (1).

23405203 is an equidigital number, since it uses as much as digits as its factorization.

23405203 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 720, while the sum is 19.

The square root of 23405203 is about 4837.8924130245. The cubic root of 23405203 is about 286.0470483507.

Adding to 23405203 its reverse (30250432), we get a palindrome (53655635).

The spelling of 23405203 in words is "twenty-three million, four hundred five thousand, two hundred three".