1316531127 has 4 divisors (see below), whose sum is σ = 1755374840. Its totient is φ = 877687416.

The previous prime is 1316531123. The next prime is 1316531131. The reversal of 1316531127 is 7211356131.

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

It is an interprime number because it is at equal distance from previous prime (1316531123) and next prime (1316531131).

It is not a de Polignac number, because 1316531127 - 2² = 1316531123 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1316531094 and 1316531103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1316531123) 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, 219421852 + ... + 219421857.

It is an arithmetic number, because the mean of its divisors is an integer number (438843710).

Almost surely, 2^1316531127 is an apocalyptic number.

1316531127 is a deficient number, since it is larger than the sum of its proper divisors (438843713).

1316531127 is an equidigital number, since it uses as much as digits as its factorization.

1316531127 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 438843712.

The product of its digits is 3780, while the sum is 30.

The square root of 1316531127 is about 36284.0340508053. The cubic root of 1316531127 is about 1095.9995535078. Note that the first 3 decimals are identical.

Adding to 1316531127 its reverse (7211356131), we get a palindrome (8527887258).

The spelling of 1316531127 in words is "one billion, three hundred sixteen million, five hundred thirty-one thousand, one hundred twenty-seven".