1231207 has 2 divisors, whose sum is σ = 1231208. Its totient is φ = 1231206.

The previous prime is 1231201. The next prime is 1231229. The reversal of 1231207 is 7021321.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (7021321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1231207 - 2³ = 1231199 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1231201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 615603 + 615604.

It is an arithmetic number, because the mean of its divisors is an integer number (615604).

2^1231207 is an apocalyptic number.

1231207 is a deficient number, since it is larger than the sum of its proper divisors (1).

1231207 is an equidigital number, since it uses as much as digits as its factorization.

1231207 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 84, while the sum is 16.

The square root of 1231207 is about 1109.5976748353. The cubic root of 1231207 is about 107.1791623844.

Adding to 1231207 its reverse (7021321), we get a palindrome (8252528).

The spelling of 1231207 in words is "one million, two hundred thirty-one thousand, two hundred seven".