11312021 has 16 divisors (see below), whose sum is σ = 14287104. Its totient is φ = 8726784.

The previous prime is 11312009. The next prime is 11312033. The reversal of 11312021 is 12021311.

11312021 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (11312009) and next prime (11312033).

It is a cyclic number.

It is not a de Polignac number, because 11312021 - 2¹⁴ = 11295637 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11311993 and 11312011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11312051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 671 + ... + 4803.

It is an arithmetic number, because the mean of its divisors is an integer number (892944).

Almost surely, 2^11312021 is an apocalyptic number.

It is an amenable number.

11312021 is a deficient number, since it is larger than the sum of its proper divisors (2975083).

11312021 is a wasteful number, since it uses less digits than its factorization.

11312021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4180.

The product of its (nonzero) digits is 12, while the sum is 11.

The square root of 11312021 is about 3363.3348034354. The cubic root of 11312021 is about 224.4812477000.

Adding to 11312021 its reverse (12021311), we get a palindrome (23333332).

The spelling of 11312021 in words is "eleven million, three hundred twelve thousand, twenty-one".