1003361 has 2 divisors, whose sum is σ = 1003362. Its totient is φ = 1003360.

The previous prime is 1003351. The next prime is 1003363. The reversal of 1003361 is 1633001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 891136 + 112225 = 944^2 + 335^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1003361 is a prime.

Together with 1003363, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1003363) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 501680 + 501681.

It is an arithmetic number, because the mean of its divisors is an integer number (501681).

2^1003361 is an apocalyptic number.

It is an amenable number.

1003361 is a deficient number, since it is larger than the sum of its proper divisors (1).

1003361 is an equidigital number, since it uses as much as digits as its factorization.

1003361 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54, while the sum is 14.

The square root of 1003361 is about 1001.6790903278. The cubic root of 1003361 is about 100.1119080525. Note that the first 3 decimals are identical.

Adding to 1003361 its reverse (1633001), we get a palindrome (2636362).

The spelling of 1003361 in words is "one million, three thousand, three hundred sixty-one".