1303263 has 32 divisors (see below), whose sum is σ = 2150400. Its totient is φ = 775008.

The previous prime is 1303261. The next prime is 1303279. The reversal of 1303263 is 3623031.

It is a happy number.

It is not a de Polignac number, because 1303263 - 2¹ = 1303261 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1303261) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16458 + ... + 16536.

It is an arithmetic number, because the mean of its divisors is an integer number (67200).

2^1303263 is an apocalyptic number.

1303263 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1303263 is a deficient number, since it is larger than the sum of its proper divisors (847137).

1303263 is a wasteful number, since it uses less digits than its factorization.

1303263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148 (or 142 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 18.

The square root of 1303263 is about 1141.6054484803. The cubic root of 1303263 is about 109.2305252183.

Adding to 1303263 its reverse (3623031), we get a palindrome (4926294).

The spelling of 1303263 in words is "one million, three hundred three thousand, two hundred sixty-three".