1317628097 has 4 divisors (see below), whose sum is σ = 1337294256. Its totient is φ = 1297961940.

The previous prime is 1317628069. The next prime is 1317628099. The reversal of 1317628097 is 7908267131.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 7908267131 = 167 ⋅47354893.

It is a cyclic number.

It is not a de Polignac number, because 1317628097 - 2²⁶ = 1250519233 is a prime.

It is a super-2 number, since 2×1317628097² = 3472287604007682818, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1317628099) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9832979 + ... + 9833112.

It is an arithmetic number, because the mean of its divisors is an integer number (334323564).

Almost surely, 2^1317628097 is an apocalyptic number.

It is an amenable number.

1317628097 is a deficient number, since it is larger than the sum of its proper divisors (19666159).

1317628097 is an equidigital number, since it uses as much as digits as its factorization.

1317628097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19666158.

The product of its (nonzero) digits is 127008, while the sum is 44.

The square root of 1317628097 is about 36299.1473315834. The cubic root of 1317628097 is about 1096.3038746733.

The spelling of 1317628097 in words is "one billion, three hundred seventeen million, six hundred twenty-eight thousand, ninety-seven".