11031321 has 24 divisors (see below), whose sum is σ = 17302464. Its totient is φ = 6232800.

The previous prime is 11031313. The next prime is 11031359. The reversal of 11031321 is 12313011.

It is not a de Polignac number, because 11031321 - 2³ = 11031313 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 11031297 and 11031306.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11031311) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14476 + ... + 15218.

It is an arithmetic number, because the mean of its divisors is an integer number (720936).

Almost surely, 2^11031321 is an apocalyptic number.

It is an amenable number.

11031321 is a deficient number, since it is larger than the sum of its proper divisors (6271143).

11031321 is a wasteful number, since it uses less digits than its factorization.

11031321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 861 (or 854 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 12.

The square root of 11031321 is about 3321.3432523604. The cubic root of 11031321 is about 222.6088916981.

Adding to 11031321 its reverse (12313011), we get a palindrome (23344332).

The spelling of 11031321 in words is "eleven million, thirty-one thousand, three hundred twenty-one".