3113121211 has 4 divisors (see below), whose sum is σ = 3113592352. Its totient is φ = 3112650072.

The previous prime is 3113121199. The next prime is 3113121217. The reversal of 3113121211 is 1121213113.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1121213113 = 1999 ⋅560887.

It is a cyclic number.

It is not a de Polignac number, because 3113121211 - 2⁷ = 3113121083 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3113121217) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 225516 + ... + 238921.

It is an arithmetic number, because the mean of its divisors is an integer number (778398088).

Almost surely, 2^3113121211 is an apocalyptic number.

3113121211 is a deficient number, since it is larger than the sum of its proper divisors (471141).

3113121211 is an equidigital number, since it uses as much as digits as its factorization.

3113121211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 471140.

The product of its digits is 36, while the sum is 16.

The square root of 3113121211 is about 55795.3511593932. The cubic root of 3113121211 is about 1460.1540481415.

Adding to 3113121211 its reverse (1121213113), we get a palindrome (4234334324).

The spelling of 3113121211 in words is "three billion, one hundred thirteen million, one hundred twenty-one thousand, two hundred eleven".