1306041263 has 4 divisors (see below), whose sum is σ = 1306164600. Its totient is φ = 1305917928.

The previous prime is 1306041257. The next prime is 1306041277. The reversal of 1306041263 is 3621406031.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3621406031 = 191 ⋅18960241.

It is a cyclic number.

It is not a de Polignac number, because 1306041263 - 2⁸ = 1306041007 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1306041283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44120 + ... + 67517.

It is an arithmetic number, because the mean of its divisors is an integer number (326541150).

Almost surely, 2^1306041263 is an apocalyptic number.

1306041263 is a deficient number, since it is larger than the sum of its proper divisors (123337).

1306041263 is a wasteful number, since it uses less digits than its factorization.

1306041263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123336.

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 1306041263 is about 36139.1928935885. The cubic root of 1306041263 is about 1093.0808841614.

Adding to 1306041263 its reverse (3621406031), we get a palindrome (4927447294).

The spelling of 1306041263 in words is "one billion, three hundred six million, forty-one thousand, two hundred sixty-three".