1303005 has 32 divisors (see below), whose sum is σ = 2332800. Its totient is φ = 615680.

The previous prime is 1302991. The next prime is 1303009. The reversal of 1303005 is 5003031.

It is a happy number.

It is not a de Polignac number, because 1303005 - 2⁹ = 1302493 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1303009) 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 in 31 ways as a sum of consecutive naturals, for example, 8671 + ... + 8819.

It is an arithmetic number, because the mean of its divisors is an integer number (72900).

2^1303005 is an apocalyptic number.

1303005 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1303005 is a deficient number, since it is larger than the sum of its proper divisors (1029795).

1303005 is a wasteful number, since it uses less digits than its factorization.

1303005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221.

The product of its (nonzero) digits is 45, while the sum is 12.

The square root of 1303005 is about 1141.4924441274. The cubic root of 1303005 is about 109.2233168151.

Adding to 1303005 its reverse (5003031), we get a palindrome (6306036).

It can be divided in two parts, 130300 and 5, that added together give a triangular number (130305 = T₅₁₀).

The spelling of 1303005 in words is "one million, three hundred three thousand, five".