1317149397 has 16 divisors (see below), whose sum is σ = 1952628480. Its totient is φ = 877516416.

The previous prime is 1317149387. The next prime is 1317149399. The reversal of 1317149397 is 7939417131.

1317149397 is a `hidden beast` number, since 1 + 3 + 1 + 71 + 493 + 97 = 666.

It is not a de Polignac number, because 1317149397 - 2⁴ = 1317149381 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1317149399) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27333 + ... + 58149.

It is an arithmetic number, because the mean of its divisors is an integer number (122039280).

Almost surely, 2^1317149397 is an apocalyptic number.

It is an amenable number.

1317149397 is a deficient number, since it is larger than the sum of its proper divisors (635479083).

1317149397 is a wasteful number, since it uses less digits than its factorization.

1317149397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32409 (or 32403 counting only the distinct ones).

The product of its digits is 142884, while the sum is 45.

The square root of 1317149397 is about 36292.5529137866. The cubic root of 1317149397 is about 1096.1710946086.

The spelling of 1317149397 in words is "one billion, three hundred seventeen million, one hundred forty-nine thousand, three hundred ninety-seven".