1312997 has 8 divisors (see below), whose sum is σ = 1515456. Its totient is φ = 1114272.

The previous prime is 1312967. The next prime is 1313041. The reversal of 1312997 is 7992131.

It is a happy number.

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 1312997 - 2¹⁴ = 1296613 is a prime.

It is a super-2 number, since 2×1312997² = 3447922244018, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312907) 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, 128 + ... + 1625.

It is an arithmetic number, because the mean of its divisors is an integer number (189432).

2^1312997 is an apocalyptic number.

It is an amenable number.

1312997 is a deficient number, since it is larger than the sum of its proper divisors (202459).

1312997 is a wasteful number, since it uses less digits than its factorization.

1312997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1867.

The product of its digits is 3402, while the sum is 32.

The square root of 1312997 is about 1145.8608117917. The cubic root of 1312997 is about 109.5017965691.

The spelling of 1312997 in words is "one million, three hundred twelve thousand, nine hundred ninety-seven".