1011321 has 12 divisors (see below), whose sum is σ = 1500772. Its totient is φ = 655776.

The previous prime is 1011289. The next prime is 1011331. The reversal of 1011321 is 1231101.

It can be written as a sum of positive squares in 2 ways, for example, as 881721 + 129600 = 939^2 + 360^2 .

It is not a de Polignac number, because 1011321 - 2⁵ = 1011289 is a prime.

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

It is a Duffinian number.

1011321 is a lucky number.

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

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1186 + ... + 1851.

2^1011321 is an apocalyptic number.

It is an amenable number.

1011321 is a deficient number, since it is larger than the sum of its proper divisors (489451).

1011321 is a wasteful number, since it uses less digits than its factorization.

1011321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3080 (or 3077 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 9.

The square root of 1011321 is about 1005.6445694180. The cubic root of 1011321 is about 100.3759515001.

Adding to 1011321 its reverse (1231101), we get a palindrome (2242422).

The spelling of 1011321 in words is "one million, eleven thousand, three hundred twenty-one".