1231226603 has 2 divisors, whose sum is σ = 1231226604. Its totient is φ = 1231226602.

The previous prime is 1231226561. The next prime is 1231226609. The reversal of 1231226603 is 3066221321.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1231226603 - 2¹² = 1231222507 is a prime.

It is not a weakly prime, because it can be changed into another prime (1231226609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 615613301 + 615613302.

It is an arithmetic number, because the mean of its divisors is an integer number (615613302).

Almost surely, 2^1231226603 is an apocalyptic number.

1231226603 is a deficient number, since it is larger than the sum of its proper divisors (1).

1231226603 is an equidigital number, since it uses as much as digits as its factorization.

1231226603 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 1231226603 is about 35088.8387240159. The cubic root of 1231226603 is about 1071.7973120891.

Adding to 1231226603 its reverse (3066221321), we get a palindrome (4297447924).

The spelling of 1231226603 in words is "one billion, two hundred thirty-one million, two hundred twenty-six thousand, six hundred three".