1223312533 has 2 divisors, whose sum is σ = 1223312534. Its totient is φ = 1223312532.

The previous prime is 1223312527. The next prime is 1223312567. The reversal of 1223312533 is 3352133221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1030602609 + 192709924 = 32103^2 + 13882^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1223312533 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1223312498 and 1223312507.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1223312513) 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, 611656266 + 611656267.

It is an arithmetic number, because the mean of its divisors is an integer number (611656267).

Almost surely, 2^1223312533 is an apocalyptic number.

It is an amenable number.

1223312533 is a deficient number, since it is larger than the sum of its proper divisors (1).

1223312533 is an equidigital number, since it uses as much as digits as its factorization.

1223312533 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3240, while the sum is 25.

The square root of 1223312533 is about 34975.8850209684. The cubic root of 1223312533 is about 1069.4959436208.

Adding to 1223312533 its reverse (3352133221), we get a palindrome (4575445754).

The spelling of 1223312533 in words is "one billion, two hundred twenty-three million, three hundred twelve thousand, five hundred thirty-three".