1331207 has 2 divisors, whose sum is σ = 1331208. Its totient is φ = 1331206.

The previous prime is 1331153. The next prime is 1331227. The reversal of 1331207 is 7021331.

It is a strong prime.

It is an emirp because it is prime and its reverse (7021331) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1331207 - 2¹² = 1327111 is a prime.

It is a super-2 number, since 2×1331207² = 3544224153698, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1331227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 665603 + 665604.

It is an arithmetic number, because the mean of its divisors is an integer number (665604).

2^1331207 is an apocalyptic number.

1331207 is a deficient number, since it is larger than the sum of its proper divisors (1).

1331207 is an equidigital number, since it uses as much as digits as its factorization.

1331207 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 126, while the sum is 17.

The square root of 1331207 is about 1153.7794416612. The cubic root of 1331207 is about 110.0057021837.

Adding to 1331207 its reverse (7021331), we get a palindrome (8352538).

The spelling of 1331207 in words is "one million, three hundred thirty-one thousand, two hundred seven".