1234309 has 2 divisors, whose sum is σ = 1234310. Its totient is φ = 1234308.

The previous prime is 1234271. The next prime is 1234333. The reversal of 1234309 is 9034321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1232100 + 2209 = 1110^2 + 47^2 .

It is a cyclic number.

It is not a de Polignac number, because 1234309 - 2¹³ = 1226117 is a prime.

It is an alternating number because its digits alternate between odd and even.

1234309 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 1234309.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1234349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 617154 + 617155.

It is an arithmetic number, because the mean of its divisors is an integer number (617155).

2^1234309 is an apocalyptic number.

It is an amenable number.

1234309 is a deficient number, since it is larger than the sum of its proper divisors (1).

1234309 is an equidigital number, since it uses as much as digits as its factorization.

1234309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 22.

The square root of 1234309 is about 1110.9945994468. The cubic root of 1234309 is about 107.2690987734.

The spelling of 1234309 in words is "one million, two hundred thirty-four thousand, three hundred nine".