1213113203 has 2 divisors, whose sum is σ = 1213113204. Its totient is φ = 1213113202.

The previous prime is 1213113199. The next prime is 1213113229. The reversal of 1213113203 is 3023113121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1213113203 - 2² = 1213113199 is a prime.

It is not a weakly prime, because it can be changed into another prime (1213113233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606556601 + 606556602.

It is an arithmetic number, because the mean of its divisors is an integer number (606556602).

Almost surely, 2^1213113203 is an apocalyptic number.

1213113203 is a deficient number, since it is larger than the sum of its proper divisors (1).

1213113203 is an equidigital number, since it uses as much as digits as its factorization.

1213113203 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 1213113203 is about 34829.7746619182. The cubic root of 1213113203 is about 1066.5153483374.

Adding to 1213113203 its reverse (3023113121), we get a palindrome (4236226324).

The spelling of 1213113203 in words is "one billion, two hundred thirteen million, one hundred thirteen thousand, two hundred three".