1243233193 has 2 divisors, whose sum is σ = 1243233194. Its totient is φ = 1243233192.

The previous prime is 1243233163. The next prime is 1243233209. The reversal of 1243233193 is 3913323421.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1041223824 + 202009369 = 32268^2 + 14213^2 .

It is a cyclic number.

It is not a de Polignac number, because 1243233193 - 2²¹ = 1241136041 is a prime.

It is not a weakly prime, because it can be changed into another prime (1243233163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 621616596 + 621616597.

It is an arithmetic number, because the mean of its divisors is an integer number (621616597).

Almost surely, 2^1243233193 is an apocalyptic number.

It is an amenable number.

1243233193 is a deficient number, since it is larger than the sum of its proper divisors (1).

1243233193 is an equidigital number, since it uses as much as digits as its factorization.

1243233193 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11664, while the sum is 31.

The square root of 1243233193 is about 35259.5120924836. The cubic root of 1243233193 is about 1075.2700076768.

The spelling of 1243233193 in words is "one billion, two hundred forty-three million, two hundred thirty-three thousand, one hundred ninety-three".