1331330 has 96 divisors (see below), whose sum is σ = 3447360. Its totient is φ = 362880.

The previous prime is 1331329. The next prime is 1331333. The reversal of 1331330 is 331331.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1331333) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 70061 + ... + 70079.

It is an arithmetic number, because the mean of its divisors is an integer number (35910).

2^1331330 is an apocalyptic number.

1331330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1331330 is an abundant number, since it is smaller than the sum of its proper divisors (2116030).

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

1331330 is a wasteful number, since it uses less digits than its factorization.

1331330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64 (or 57 counting only the distinct ones).

The product of its (nonzero) digits is 81, while the sum is 14.

The square root of 1331330 is about 1153.8327435118. The cubic root of 1331330 is about 110.0090901579.

Adding to 1331330 its reverse (331331), we get a palindrome (1662661).

Subtracting from 1331330 its reverse (331331), we obtain a palindrome (999999).

It can be divided in two parts, 1331 and 330, that added together give a palindrome (1661).

The spelling of 1331330 in words is "one million, three hundred thirty-one thousand, three hundred thirty".