23278603 has 2 divisors, whose sum is σ = 23278604. Its totient is φ = 23278602.

The previous prime is 23278601. The next prime is 23278621. The reversal of 23278603 is 30687232.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 23278603 - 2¹ = 23278601 is a prime.

Together with 23278601, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (23278601) 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, 11639301 + 11639302.

It is an arithmetic number, because the mean of its divisors is an integer number (11639302).

Almost surely, 2^23278603 is an apocalyptic number.

23278603 is a deficient number, since it is larger than the sum of its proper divisors (1).

23278603 is an equidigital number, since it uses as much as digits as its factorization.

23278603 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12096, while the sum is 31.

The square root of 23278603 is about 4824.7904617714. The cubic root of 23278603 is about 285.5303676945.

The spelling of 23278603 in words is "twenty-three million, two hundred seventy-eight thousand, six hundred three".