1214315309 has 2 divisors, whose sum is σ = 1214315310. Its totient is φ = 1214315308.

The previous prime is 1214315293. The next prime is 1214315317. The reversal of 1214315309 is 9035134121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1186458025 + 27857284 = 34445^2 + 5278^2 .

It is a cyclic number.

It is not a de Polignac number, because 1214315309 - 2⁴ = 1214315293 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1214315369) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 607157654 + 607157655.

It is an arithmetic number, because the mean of its divisors is an integer number (607157655).

Almost surely, 2^1214315309 is an apocalyptic number.

It is an amenable number.

1214315309 is a deficient number, since it is larger than the sum of its proper divisors (1).

1214315309 is an equidigital number, since it uses as much as digits as its factorization.

1214315309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3240, while the sum is 29.

The square root of 1214315309 is about 34847.0272620205. The cubic root of 1214315309 is about 1066.8675114749.

The spelling of 1214315309 in words is "one billion, two hundred fourteen million, three hundred fifteen thousand, three hundred nine".