1297312 has 24 divisors (see below), whose sum is σ = 2594592. Its totient is φ = 638400.

The previous prime is 1297297. The next prime is 1297313. The reversal of 1297312 is 2137921.

It is not an unprimeable number, because it can be changed into a prime (1297313) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1987 + ... + 2557.

It is an arithmetic number, because the mean of its divisors is an integer number (108108).

2^1297312 is an apocalyptic number.

It is an amenable number.

1297312 is a deficient number, since it is larger than the sum of its proper divisors (1297280).

1297312 is an equidigital number, since it uses as much as digits as its factorization.

1297312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 652 (or 644 counting only the distinct ones).

The product of its digits is 756, while the sum is 25.

The square root of 1297312 is about 1138.9960491591. The cubic root of 1297312 is about 109.0640142454.

The spelling of 1297312 in words is "one million, two hundred ninety-seven thousand, three hundred twelve".