1261333 has 2 divisors, whose sum is σ = 1261334. Its totient is φ = 1261332.

The previous prime is 1261327. The next prime is 1261357. The reversal of 1261333 is 3331621.

It is the 459-th star number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 842724 + 418609 = 918^2 + 647^2 .

It is an emirp because it is prime and its reverse (3331621) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1261333 - 2⁵ = 1261301 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1261333.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1261313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 630666 + 630667.

It is an arithmetic number, because the mean of its divisors is an integer number (630667).

2^1261333 is an apocalyptic number.

It is an amenable number.

1261333 is a deficient number, since it is larger than the sum of its proper divisors (1).

1261333 is an equidigital number, since it uses as much as digits as its factorization.

1261333 is an evil number, because the sum of its binary digits is even.

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

The square root of 1261333 is about 1123.0908244661. The cubic root of 1261333 is about 108.0463050181.

Adding to 1261333 its reverse (3331621), we get a palindrome (4592954).

The spelling of 1261333 in words is "one million, two hundred sixty-one thousand, three hundred thirty-three".