1331040 has 96 divisors (see below), whose sum is σ = 4354560. Its totient is φ = 341504.

The previous prime is 1331039. The next prime is 1331041. The reversal of 1331040 is 401331.

It is an interprime number because it is at equal distance from previous prime (1331039) and next prime (1331041).

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1331041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22531 + ... + 22589.

It is an arithmetic number, because the mean of its divisors is an integer number (45360).

2^1331040 is an apocalyptic number.

1331040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1331040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2177280).

1331040 is an abundant number, since it is smaller than the sum of its proper divisors (3023520).

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

1331040 is a wasteful number, since it uses less digits than its factorization.

1331040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124 (or 116 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 1331040 is about 1153.7070685404. The cubic root of 1331040 is about 110.0011019173.

Adding to 1331040 its reverse (401331), we get a palindrome (1732371).

The spelling of 1331040 in words is "one million, three hundred thirty-one thousand, forty".