1306231303 has 4 divisors (see below), whose sum is σ = 1406710648. Its totient is φ = 1205751960.

The previous prime is 1306231301. The next prime is 1306231309. The reversal of 1306231303 is 3031326031.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1306231303 - 2¹ = 1306231301 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 (1306231301) 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, 50239653 + ... + 50239678.

It is an arithmetic number, because the mean of its divisors is an integer number (351677662).

Almost surely, 2^1306231303 is an apocalyptic number.

1306231303 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1306231303 is a deficient number, since it is larger than the sum of its proper divisors (100479345).

1306231303 is a wasteful number, since it uses less digits than its factorization.

1306231303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100479344.

The product of its (nonzero) digits is 972, while the sum is 22.

The square root of 1306231303 is about 36141.8220763702. The cubic root of 1306231303 is about 1093.1338990807.

Adding to 1306231303 its reverse (3031326031), we get a palindrome (4337557334).

The spelling of 1306231303 in words is "one billion, three hundred six million, two hundred thirty-one thousand, three hundred three".