1331316307 has 4 divisors (see below), whose sum is σ = 1331424936. Its totient is φ = 1331207680.

The previous prime is 1331316281. The next prime is 1331316317. The reversal of 1331316307 is 7036131331.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 7036131331 = 24767 ⋅284093.

It is a cyclic number.

It is not a de Polignac number, because 1331316307 - 2¹⁹ = 1330792019 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1331316317) 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, 33193 + ... + 61354.

It is an arithmetic number, because the mean of its divisors is an integer number (332856234).

Almost surely, 2^1331316307 is an apocalyptic number.

1331316307 is a deficient number, since it is larger than the sum of its proper divisors (108629).

1331316307 is an equidigital number, since it uses as much as digits as its factorization.

1331316307 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108628.

The product of its (nonzero) digits is 3402, while the sum is 28.

The square root of 1331316307 is about 36487.2074431574. The cubic root of 1331316307 is about 1100.0871300129.

Adding to 1331316307 its reverse (7036131331), we get a palindrome (8367447638).

The spelling of 1331316307 in words is "one billion, three hundred thirty-one million, three hundred sixteen thousand, three hundred seven".