3111133213 has 4 divisors (see below), whose sum is σ = 3111390940. Its totient is φ = 3110875488.

The previous prime is 3111133187. The next prime is 3111133273. The reversal of 3111133213 is 3123311113.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3123311113 = 13 ⋅240254701.

It can be written as a sum of positive squares in 2 ways, for example, as 2246949604 + 864183609 = 47402^2 + 29397^2 .

It is a cyclic number.

It is not a de Polignac number, because 3111133213 - 2¹³ = 3111125021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3111133273) 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 3 ways as a sum of consecutive naturals, for example, 109818 + ... + 135211.

It is an arithmetic number, because the mean of its divisors is an integer number (777847735).

Almost surely, 2^3111133213 is an apocalyptic number.

It is an amenable number.

3111133213 is a deficient number, since it is larger than the sum of its proper divisors (257727).

3111133213 is a wasteful number, since it uses less digits than its factorization.

3111133213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257726.

The product of its digits is 162, while the sum is 19.

The square root of 3111133213 is about 55777.5332279942. The cubic root of 3111133213 is about 1459.8431702751.

Adding to 3111133213 its reverse (3123311113), we get a palindrome (6234444326).

The spelling of 3111133213 in words is "three billion, one hundred eleven million, one hundred thirty-three thousand, two hundred thirteen".