1317388 has 6 divisors (see below), whose sum is σ = 2305436. Its totient is φ = 658692.

The previous prime is 1317377. The next prime is 1317397. The reversal of 1317388 is 8837131.

It is a super-2 number, since 2×1317388² = 3471022285088, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 164670 + ... + 164677.

2^1317388 is an apocalyptic number.

It is an amenable number.

1317388 is a deficient number, since it is larger than the sum of its proper divisors (988048).

1317388 is a wasteful number, since it uses less digits than its factorization.

1317388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 329351 (or 329349 counting only the distinct ones).

The product of its digits is 4032, while the sum is 31.

The square root of 1317388 is about 1147.7752393217. The cubic root of 1317388 is about 109.6237281461.

The spelling of 1317388 in words is "one million, three hundred seventeen thousand, three hundred eighty-eight".