1213223603 has 2 divisors, whose sum is σ = 1213223604. Its totient is φ = 1213223602.

The previous prime is 1213223597. The next prime is 1213223611. The reversal of 1213223603 is 3063223121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1213223603 - 2²⁴ = 1196446387 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (1213225603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606611801 + 606611802.

It is an arithmetic number, because the mean of its divisors is an integer number (606611802).

Almost surely, 2^1213223603 is an apocalyptic number.

1213223603 is a deficient number, since it is larger than the sum of its proper divisors (1).

1213223603 is an equidigital number, since it uses as much as digits as its factorization.

1213223603 is an evil number, because the sum of its binary digits is even.

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

The square root of 1213223603 is about 34831.3594767704. The cubic root of 1213223603 is about 1066.5477002846.

Adding to 1213223603 its reverse (3063223121), we get a palindrome (4276446724).

The spelling of 1213223603 in words is "one billion, two hundred thirteen million, two hundred twenty-three thousand, six hundred three".