1003913 has 2 divisors, whose sum is σ = 1003914. Its totient is φ = 1003912.

The previous prime is 1003909. The next prime is 1003931. The reversal of 1003913 is 3193001.

1003913 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

Together with next prime (1003931) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 659344 + 344569 = 812^2 + 587^2 .

It is a cyclic number.

It is not a de Polignac number, because 1003913 - 2² = 1003909 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1003891 and 1003900.

It is not a weakly prime, because it can be changed into another prime (1003943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 501956 + 501957.

It is an arithmetic number, because the mean of its divisors is an integer number (501957).

2^1003913 is an apocalyptic number.

It is an amenable number.

1003913 is a deficient number, since it is larger than the sum of its proper divisors (1).

1003913 is an equidigital number, since it uses as much as digits as its factorization.

1003913 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 81, while the sum is 17.

The square root of 1003913 is about 1001.9545897894. The cubic root of 1003913 is about 100.1302635737.

Adding to 1003913 its reverse (3193001), we get a palindrome (4196914).

The spelling of 1003913 in words is "one million, three thousand, nine hundred thirteen".