1291597532317 has 8 divisors (see below), whose sum is σ = 1323279188280. Its totient is φ = 1259924413440.

The previous prime is 1291597532297. The next prime is 1291597532353. The reversal of 1291597532317 is 7132357951921.

It can be written as a sum of positive squares in 4 ways, for example, as 72121250916 + 1219476281401 = 268554^2 + 1104299^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1291597532317 - 2³⁵ = 1257237793949 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1291597532117) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1827442 + ... + 2433667.

It is an arithmetic number, because the mean of its divisors is an integer number (165409898535).

Almost surely, 2^{1291597532317} is an apocalyptic number.

It is an amenable number.

1291597532317 is a deficient number, since it is larger than the sum of its proper divisors (31681655963).

1291597532317 is an equidigital number, since it uses as much as digits as its factorization.

1291597532317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4268543.

The product of its digits is 3572100, while the sum is 55.

The spelling of 1291597532317 in words is "one trillion, two hundred ninety-one billion, five hundred ninety-seven million, five hundred thirty-two thousand, three hundred seventeen".