1263331 has 2 divisors, whose sum is σ = 1263332. Its totient is φ = 1263330.

The previous prime is 1263323. The next prime is 1263337. The reversal of 1263331 is 1333621.

It is a strong prime.

It is an emirp because it is prime and its reverse (1333621) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1263331 - 2³ = 1263323 is a prime.

It is a super-2 number, since 2×1263331² = 3192010431122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1263299 and 1263308.

It is not a weakly prime, because it can be changed into another prime (1263337) 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, 631665 + 631666.

It is an arithmetic number, because the mean of its divisors is an integer number (631666).

2^1263331 is an apocalyptic number.

1263331 is a deficient number, since it is larger than the sum of its proper divisors (1).

1263331 is an equidigital number, since it uses as much as digits as its factorization.

1263331 is an odious number, because the sum of its binary digits is odd.

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

The square root of 1263331 is about 1123.9799820281. The cubic root of 1263331 is about 108.1033247563.

Adding to 1263331 its reverse (1333621), we get a palindrome (2596952).

The spelling of 1263331 in words is "one million, two hundred sixty-three thousand, three hundred thirty-one".