11321031 has 16 divisors (see below), whose sum is σ = 16326144. Its totient is φ = 6950784.

The previous prime is 11321029. The next prime is 11321047. The reversal of 11321031 is 13012311.

It is not a de Polignac number, because 11321031 - 2¹ = 11321029 is a prime.

It is a super-2 number, since 2×11321031² = 256331485805922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11320998 and 11321016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11321071) 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, 36 + ... + 4758.

It is an arithmetic number, because the mean of its divisors is an integer number (1020384).

Almost surely, 2^11321031 is an apocalyptic number.

11321031 is a deficient number, since it is larger than the sum of its proper divisors (5005113).

11321031 is a wasteful number, since it uses less digits than its factorization.

11321031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4790.

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

The square root of 11321031 is about 3364.6739812350. The cubic root of 11321031 is about 224.5408314910.

Adding to 11321031 its reverse (13012311), we get a palindrome (24333342).

The spelling of 11321031 in words is "eleven million, three hundred twenty-one thousand, thirty-one".