1327287497 has 4 divisors (see below), whose sum is σ = 1332795156. Its totient is φ = 1321779840.

The previous prime is 1327287431. The next prime is 1327287517. The reversal of 1327287497 is 7947827231.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7947827231 = 42719 ⋅186049.

It can be written as a sum of positive squares in 2 ways, for example, as 443355136 + 883932361 = 21056^2 + 29731^2 .

It is a cyclic number.

It is not a de Polignac number, because 1327287497 - 2¹² = 1327283401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1327287397) 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, 2753468 + ... + 2753949.

It is an arithmetic number, because the mean of its divisors is an integer number (333198789).

Almost surely, 2^1327287497 is an apocalyptic number.

It is an amenable number.

1327287497 is a deficient number, since it is larger than the sum of its proper divisors (5507659).

1327287497 is an equidigital number, since it uses as much as digits as its factorization.

1327287497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5507658.

The product of its digits is 1185408, while the sum is 50.

The square root of 1327287497 is about 36431.9570844060. The cubic root of 1327287497 is about 1098.9763195403.

The spelling of 1327287497 in words is "one billion, three hundred twenty-seven million, two hundred eighty-seven thousand, four hundred ninety-seven".