1213332403 has 2 divisors, whose sum is σ = 1213332404. Its totient is φ = 1213332402.

The previous prime is 1213332397. The next prime is 1213332431. The reversal of 1213332403 is 3042333121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1213332403 - 2⁵ = 1213332371 is a prime.

It is not a weakly prime, because it can be changed into another prime (1213332433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606666201 + 606666202.

It is an arithmetic number, because the mean of its divisors is an integer number (606666202).

Almost surely, 2^1213332403 is an apocalyptic number.

1213332403 is a deficient number, since it is larger than the sum of its proper divisors (1).

1213332403 is an equidigital number, since it uses as much as digits as its factorization.

1213332403 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 22.

The square root of 1213332403 is about 34832.9212527459. The cubic root of 1213332403 is about 1066.5795814429.

Adding to 1213332403 its reverse (3042333121), we get a palindrome (4255665524).

The spelling of 1213332403 in words is "one billion, two hundred thirteen million, three hundred thirty-two thousand, four hundred three".