1217324307386 has 24 divisors (see below), whose sum is σ = 2007563767860. Its totient is φ = 553194766080.

The previous prime is 1217324307379. The next prime is 1217324307421. The reversal of 1217324307386 is 6837034237121.

It can be written as a sum of positive squares in 2 ways, for example, as 1215693682225 + 1630625161 = 1102585^2 + 40381^2 .

It is a super-2 number, since 2×1217324307386² (a number of 25 digits) contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1217324307386.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 390080 + ... + 1608356.

Almost surely, 2^{1217324307386} is an apocalyptic number.

1217324307386 is a deficient number, since it is larger than the sum of its proper divisors (790239460474).

1217324307386 is a wasteful number, since it uses less digits than its factorization.

1217324307386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1222430 (or 1222419 counting only the distinct ones).

The product of its (nonzero) digits is 1016064, while the sum is 47.

The spelling of 1217324307386 in words is "one trillion, two hundred seventeen billion, three hundred twenty-four million, three hundred seven thousand, three hundred eighty-six".