1331298 has 12 divisors (see below), whose sum is σ = 2884518. Its totient is φ = 443760.

The previous prime is 1331293. The next prime is 1331299. The reversal of 1331298 is 8921331.

It can be written as a sum of positive squares in only one way, i.e., 859329 + 471969 = 927^2 + 687^2 .

It is not an unprimeable number, because it can be changed into a prime (1331293) by changing a digit.

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 in 5 ways as a sum of consecutive naturals, for example, 36963 + ... + 36998.

2^1331298 is an apocalyptic number.

1331298 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1331298 is an abundant number, since it is smaller than the sum of its proper divisors (1553220).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1331298 is a wasteful number, since it uses less digits than its factorization.

1331298 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73969 (or 73966 counting only the distinct ones).

The product of its digits is 1296, while the sum is 27.

The square root of 1331298 is about 1153.8188766007. The cubic root of 1331298 is about 110.0082087538.

It can be divided in two parts, 133 and 1298, that added together give a triangular number (1431 = T₅₃).

The spelling of 1331298 in words is "one million, three hundred thirty-one thousand, two hundred ninety-eight".