1011330 has 48 divisors (see below), whose sum is σ = 2788344. Its totient is φ = 253440.

The previous prime is 1011289. The next prime is 1011331. The reversal of 1011330 is 331101.

It can be written as a sum of positive squares in 4 ways, for example, as 986049 + 25281 = 993^2 + 159^2 .

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1011331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1200 + ... + 1860.

2^1011330 is an apocalyptic number.

1011330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1011330, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1394172).

1011330 is an abundant number, since it is smaller than the sum of its proper divisors (1777014).

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

1011330 is a wasteful number, since it uses less digits than its factorization.

1011330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 691 (or 688 counting only the distinct ones).

The product of its (nonzero) digits is 9, while the sum is 9.

The square root of 1011330 is about 1005.6490441501. The cubic root of 1011330 is about 100.3762492562.

Adding to 1011330 its reverse (331101), we get a palindrome (1342431).

It can be divided in two parts, 101 and 1330, that added together give a triangular number (1431 = T₅₃).

The spelling of 1011330 in words is "one million, eleven thousand, three hundred thirty".