1303331 has 2 divisors, whose sum is σ = 1303332. Its totient is φ = 1303330.

The previous prime is 1303327. The next prime is 1303363. The reversal of 1303331 is 1333031.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1303331 - 2² = 1303327 is a prime.

It is a super-2 number, since 2×1303331² = 3397343391122, which contains 22 as substring.

It is a Chen prime.

It is equal to p₁₀₀₂₆₅ and since 1303331 and 100265 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (1303321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 651665 + 651666.

It is an arithmetic number, because the mean of its divisors is an integer number (651666).

2^1303331 is an apocalyptic number.

1303331 is a deficient number, since it is larger than the sum of its proper divisors (1).

1303331 is an equidigital number, since it uses as much as digits as its factorization.

1303331 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 81, while the sum is 14.

The square root of 1303331 is about 1141.6352307108. The cubic root of 1303331 is about 109.2324249491.

Adding to 1303331 its reverse (1333031), we get a palindrome (2636362).

The spelling of 1303331 in words is "one million, three hundred three thousand, three hundred thirty-one".