1231322333 has 2 divisors, whose sum is σ = 1231322334. Its totient is φ = 1231322332.

The previous prime is 1231322321. The next prime is 1231322353. The reversal of 1231322333 is 3332231321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1077611929 + 153710404 = 32827^2 + 12398^2 .

It is an emirp because it is prime and its reverse (3332231321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1231322333 - 2¹⁰ = 1231321309 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1231322299 and 1231322308.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1231322353) 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, 615661166 + 615661167.

It is an arithmetic number, because the mean of its divisors is an integer number (615661167).

Almost surely, 2^1231322333 is an apocalyptic number.

It is an amenable number.

1231322333 is a deficient number, since it is larger than the sum of its proper divisors (1).

1231322333 is an equidigital number, since it uses as much as digits as its factorization.

1231322333 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1944, while the sum is 23.

The square root of 1231322333 is about 35090.2028064815. The cubic root of 1231322333 is about 1071.8250894014.

Adding to 1231322333 its reverse (3332231321), we get a palindrome (4563553654).

The spelling of 1231322333 in words is "one billion, two hundred thirty-one million, three hundred twenty-two thousand, three hundred thirty-three".