1213797307 has 2 divisors, whose sum is σ = 1213797308. Its totient is φ = 1213797306.

The previous prime is 1213797289. The next prime is 1213797323. The reversal of 1213797307 is 7037973121.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1213797307 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1213797307.

It is not a weakly prime, because it can be changed into another prime (1213797367) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606898653 + 606898654.

It is an arithmetic number, because the mean of its divisors is an integer number (606898654).

Almost surely, 2^1213797307 is an apocalyptic number.

1213797307 is a deficient number, since it is larger than the sum of its proper divisors (1).

1213797307 is an equidigital number, since it uses as much as digits as its factorization.

1213797307 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 55566, while the sum is 40.

The square root of 1213797307 is about 34839.5939557280. The cubic root of 1213797307 is about 1066.7157886341.

The spelling of 1213797307 in words is "one billion, two hundred thirteen million, seven hundred ninety-seven thousand, three hundred seven".