1303961 has 2 divisors, whose sum is σ = 1303962. Its totient is φ = 1303960.

The previous prime is 1303933. The next prime is 1303963. The reversal of 1303961 is 1693031.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1177225 + 126736 = 1085^2 + 356^2 .

It is an emirp because it is prime and its reverse (1693031) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1303961 - 2¹⁰ = 1302937 is a prime.

Together with 1303963, 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 (1303963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 651980 + 651981.

It is an arithmetic number, because the mean of its divisors is an integer number (651981).

2^1303961 is an apocalyptic number.

It is an amenable number.

1303961 is a deficient number, since it is larger than the sum of its proper divisors (1).

1303961 is an equidigital number, since it uses as much as digits as its factorization.

1303961 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 486, while the sum is 23.

The square root of 1303961 is about 1141.9111173817. The cubic root of 1303961 is about 109.2500222549.

Adding to 1303961 its reverse (1693031), we get a palindrome (2996992).

The spelling of 1303961 in words is "one million, three hundred three thousand, nine hundred sixty-one".