3111011321 has 4 divisors (see below), whose sum is σ = 3393830544. Its totient is φ = 2828192100.

The previous prime is 3111011297. The next prime is 3111011327. The reversal of 3111011321 is 1231101113.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1231101113 = 11 ⋅111918283.

It is a cyclic number.

It is not a de Polignac number, because 3111011321 - 2¹⁰ = 3111010297 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3111011296 and 3111011305.

It is not an unprimeable number, because it can be changed into a prime (3111011327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 141409595 + ... + 141409616.

It is an arithmetic number, because the mean of its divisors is an integer number (848457636).

Almost surely, 2^3111011321 is an apocalyptic number.

It is an amenable number.

3111011321 is a deficient number, since it is larger than the sum of its proper divisors (282819223).

3111011321 is a wasteful number, since it uses less digits than its factorization.

3111011321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 282819222.

The product of its (nonzero) digits is 18, while the sum is 14.

The square root of 3111011321 is about 55776.4405551304. The cubic root of 3111011321 is about 1459.8241048183.

Adding to 3111011321 its reverse (1231101113), we get a palindrome (4342112434).

The spelling of 3111011321 in words is "three billion, one hundred eleven million, eleven thousand, three hundred twenty-one".