Search a number
1207 = 1771

1207 has 4 divisors (see below), whose sum is σ = 1296. Its totient is φ = 1120.

The previous prime is 1201. The next prime is 1213. The reversal of 1207 is 7021.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is an interprime number because it is at equal distance from previous prime (1201) and next prime (1213).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-1207 is a prime.

It is a Duffinian number.

It is a plaindrome in base 8 and base 15.

It is a nialpdrome in base 6.

It is a junction number, because it is equal to n+sod(n) for n = 1193 and 1202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201) by changing a digit.

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

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19 + ... + 52.

It is an arithmetic number, because the mean of its divisors is an integer number (324).

1207 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

1207 is a deficient number, since it is larger than the sum of its proper divisors (89).

1207 is an equidigital number, since it uses as much as digits as its factorization.

1207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88.

The product of its (nonzero) digits is 14, while the sum is 10.

The square root of 1207 is about 34.7419055321. The cubic root of 1207 is about 10.6472084494.

Adding to 1207 its product of nonzero digits (14), we get a palindrome (1221).

Adding to 1207 its reverse (7021), we get a palindrome (8228).

The spelling of 1207 in words is "one thousand, two hundred seven", and thus it is an iban number.

Divisors: 1 17 71 1207