1212313247 has 2 divisors, whose sum is σ = 1212313248. Its totient is φ = 1212313246.

The previous prime is 1212313241. The next prime is 1212313283. The reversal of 1212313247 is 7423132121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1212313247 - 2¹⁰ = 1212312223 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1212313241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606156623 + 606156624.

It is an arithmetic number, because the mean of its divisors is an integer number (606156624).

Almost surely, 2^1212313247 is an apocalyptic number.

1212313247 is a deficient number, since it is larger than the sum of its proper divisors (1).

1212313247 is an equidigital number, since it uses as much as digits as its factorization.

1212313247 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2016, while the sum is 26.

The square root of 1212313247 is about 34818.2889728947. The cubic root of 1212313247 is about 1066.2808681720.

Adding to 1212313247 its reverse (7423132121), we get a palindrome (8635445368).

The spelling of 1212313247 in words is "one billion, two hundred twelve million, three hundred thirteen thousand, two hundred forty-seven".