1243213327 has 2 divisors, whose sum is σ = 1243213328. Its totient is φ = 1243213326.

The previous prime is 1243213241. The next prime is 1243213331. The reversal of 1243213327 is 7233123421.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1243213327 - 2⁷ = 1243213199 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1243213295 and 1243213304.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1243211327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 621606663 + 621606664.

It is an arithmetic number, because the mean of its divisors is an integer number (621606664).

Almost surely, 2^1243213327 is an apocalyptic number.

1243213327 is a deficient number, since it is larger than the sum of its proper divisors (1).

1243213327 is an equidigital number, since it uses as much as digits as its factorization.

1243213327 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6048, while the sum is 28.

The square root of 1243213327 is about 35259.2303801430. The cubic root of 1243213327 is about 1075.2642802912.

Adding to 1243213327 its reverse (7233123421), we get a palindrome (8476336748).

The spelling of 1243213327 in words is "one billion, two hundred forty-three million, two hundred thirteen thousand, three hundred twenty-seven".