1303261 has 2 divisors, whose sum is σ = 1303262. Its totient is φ = 1303260.

The previous prime is 1303243. The next prime is 1303279. The reversal of 1303261 is 1623031.

It is a balanced prime because it is at equal distance from previous prime (1303243) and next prime (1303279).

It can be written as a sum of positive squares in only one way, i.e., 1265625 + 37636 = 1125^2 + 194^2 .

It is a cyclic number.

It is not a de Polignac number, because 1303261 - 2¹³ = 1295069 is a prime.

It is a super-3 number, since 3×1303261³ = 6640724333249305743, which contains 333 as substring.

It is equal to p₁₀₀₂₅₈ and since 1303261 and 100258 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1303241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 651630 + 651631.

It is an arithmetic number, because the mean of its divisors is an integer number (651631).

2^1303261 is an apocalyptic number.

It is an amenable number.

1303261 is a deficient number, since it is larger than the sum of its proper divisors (1).

1303261 is an equidigital number, since it uses as much as digits as its factorization.

1303261 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 1303261 is about 1141.6045725206. The cubic root of 1303261 is about 109.2304693429.

Adding to 1303261 its reverse (1623031), we get a palindrome (2926292).

The spelling of 1303261 in words is "one million, three hundred three thousand, two hundred sixty-one".