1311298 has 4 divisors (see below), whose sum is σ = 1966950. Its totient is φ = 655648.

The previous prime is 1311287. The next prime is 1311301. The reversal of 1311298 is 8921131.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1225449 + 85849 = 1107^2 + 293^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 327823 + ... + 327826.

2^1311298 is an apocalyptic number.

1311298 is a deficient number, since it is larger than the sum of its proper divisors (655652).

1311298 is an equidigital number, since it uses as much as digits as its factorization.

1311298 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 655651.

The product of its digits is 432, while the sum is 25.

The square root of 1311298 is about 1145.1192077683. The cubic root of 1311298 is about 109.4545449110.

It can be divided in two parts, 13 and 11298, that added together give a palindrome (11311).

The spelling of 1311298 in words is "one million, three hundred eleven thousand, two hundred ninety-eight".