23261603 has 2 divisors, whose sum is σ = 23261604. Its totient is φ = 23261602.

The previous prime is 23261573. The next prime is 23261617. The reversal of 23261603 is 30616232.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 23261603 - 2⁸ = 23261347 is a prime.

It is a super-2 number, since 2×23261603² = 1082204348259218, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (23261633) 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, 11630801 + 11630802.

It is an arithmetic number, because the mean of its divisors is an integer number (11630802).

Almost surely, 2^23261603 is an apocalyptic number.

23261603 is a deficient number, since it is larger than the sum of its proper divisors (1).

23261603 is an equidigital number, since it uses as much as digits as its factorization.

23261603 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 23.

The square root of 23261603 is about 4823.0284054731. The cubic root of 23261603 is about 285.4608446460.

Adding to 23261603 its reverse (30616232), we get a palindrome (53877835).

The spelling of 23261603 in words is "twenty-three million, two hundred sixty-one thousand, six hundred three".