1331268 has 12 divisors (see below), whose sum is σ = 3106320. Its totient is φ = 443752.

The previous prime is 1331261. The next prime is 1331269. The reversal of 1331268 is 8621331.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (1331261) 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, 55458 + ... + 55481.

It is an arithmetic number, because the mean of its divisors is an integer number (258860).

2^1331268 is an apocalyptic number.

It is an amenable number.

1331268 is an abundant number, since it is smaller than the sum of its proper divisors (1775052).

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

1331268 is a wasteful number, since it uses less digits than its factorization.

1331268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110946 (or 110944 counting only the distinct ones).

The product of its digits is 864, while the sum is 24.

The square root of 1331268 is about 1153.8058762201. The cubic root of 1331268 is about 110.0073824246.

Adding to 1331268 its reverse (8621331), we get a palindrome (9952599).

The spelling of 1331268 in words is "one million, three hundred thirty-one thousand, two hundred sixty-eight".