1263313 has 4 divisors (see below), whose sum is σ = 1290240. Its totient is φ = 1236388.

The previous prime is 1263307. The next prime is 1263319. The reversal of 1263313 is 3133621.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3133621 = 433 ⋅7237.

It is an interprime number because it is at equal distance from previous prime (1263307) and next prime (1263319).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1263313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1263319) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13393 + ... + 13486.

It is an arithmetic number, because the mean of its divisors is an integer number (322560).

2^1263313 is an apocalyptic number.

It is an amenable number.

1263313 is a deficient number, since it is larger than the sum of its proper divisors (26927).

1263313 is an equidigital number, since it uses as much as digits as its factorization.

1263313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26926.

The product of its digits is 324, while the sum is 19.

The square root of 1263313 is about 1123.9719747396. The cubic root of 1263313 is about 108.1028113334.

Adding to 1263313 its reverse (3133621), we get a palindrome (4396934).

The spelling of 1263313 in words is "one million, two hundred sixty-three thousand, three hundred thirteen".