1318830971 has 4 divisors (see below), whose sum is σ = 1376171472. Its totient is φ = 1261490472.

The previous prime is 1318830917. The next prime is 1318830973. The reversal of 1318830971 is 1790388131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1790388131 = 7 ⋅255769733.

It is a cyclic number.

It is not a de Polignac number, because 1318830971 - 2¹⁸ = 1318568827 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1318830973) 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, 28670216 + ... + 28670261.

It is an arithmetic number, because the mean of its divisors is an integer number (344042868).

Almost surely, 2^1318830971 is an apocalyptic number.

1318830971 is a deficient number, since it is larger than the sum of its proper divisors (57340501).

1318830971 is an equidigital number, since it uses as much as digits as its factorization.

1318830971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57340500.

The product of its (nonzero) digits is 36288, while the sum is 41.

The square root of 1318830971 is about 36315.7124534271. The cubic root of 1318830971 is about 1096.6373816126.

The spelling of 1318830971 in words is "one billion, three hundred eighteen million, eight hundred thirty thousand, nine hundred seventy-one".