1203217 has 2 divisors, whose sum is σ = 1203218. Its totient is φ = 1203216.

The previous prime is 1203211. The next prime is 1203221. The reversal of 1203217 is 7123021.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 690561 + 512656 = 831^2 + 716^2 .

It is an emirp because it is prime and its reverse (7123021) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1203217 is a prime.

It is a super-2 number, since 2×1203217² = 2895462298178, which contains 22 as substring.

1203217 is a lucky number.

It is a plaindrome in base 9.

It is a self number, because there is not a number n which added to its sum of digits gives 1203217.

It is not a weakly prime, because it can be changed into another prime (1203211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 601608 + 601609.

It is an arithmetic number, because the mean of its divisors is an integer number (601609).

2^1203217 is an apocalyptic number.

It is an amenable number.

1203217 is a deficient number, since it is larger than the sum of its proper divisors (1).

1203217 is an equidigital number, since it uses as much as digits as its factorization.

1203217 is an evil number, because the sum of its binary digits is even.

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

The square root of 1203217 is about 1096.9124851145. The cubic root of 1203217 is about 106.3607325373.

Adding to 1203217 its reverse (7123021), we get a palindrome (8326238).

The spelling of 1203217 in words is "one million, two hundred three thousand, two hundred seventeen".