1303613 has 2 divisors, whose sum is σ = 1303614. Its totient is φ = 1303612.

The previous prime is 1303597. The next prime is 1303633. The reversal of 1303613 is 3163031.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1036324 + 267289 = 1018^2 + 517^2 .

It is a cyclic number.

It is not a de Polignac number, because 1303613 - 2⁴ = 1303597 is a prime.

It is a Chen prime.

It is equal to p₁₀₀₂₈₆ and since 1303613 and 100286 have the same sum of digits, it is a Honaker prime.

It is a junction number, because it is equal to n+sod(n) for n = 1303591 and 1303600.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1303633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 651806 + 651807.

It is an arithmetic number, because the mean of its divisors is an integer number (651807).

2^1303613 is an apocalyptic number.

It is an amenable number.

1303613 is a deficient number, since it is larger than the sum of its proper divisors (1).

1303613 is an equidigital number, since it uses as much as digits as its factorization.

1303613 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 162, while the sum is 17.

The square root of 1303613 is about 1141.7587310811. The cubic root of 1303613 is about 109.2403025393.

Adding to 1303613 its reverse (3163031), we get a palindrome (4466644).

The spelling of 1303613 in words is "one million, three hundred three thousand, six hundred thirteen".