3111811213 has 8 divisors (see below), whose sum is σ = 3556776960. Its totient is φ = 2666950800.

The previous prime is 3111811201. The next prime is 3111811237. The reversal of 3111811213 is 3121181113.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3111811213 - 2¹³ = 3111803021 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 (3111811253) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52863 + ... + 94963.

It is an arithmetic number, because the mean of its divisors is an integer number (444597120).

Almost surely, 2^3111811213 is an apocalyptic number.

It is an amenable number.

3111811213 is a deficient number, since it is larger than the sum of its proper divisors (444965747).

3111811213 is a wasteful number, since it uses less digits than its factorization.

3111811213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52667.

The product of its digits is 144, while the sum is 22.

The square root of 3111811213 is about 55783.6106127956. The cubic root of 3111811213 is about 1459.9492089981.

Adding to 3111811213 its reverse (3121181113), we get a palindrome (6232992326).

The spelling of 3111811213 in words is "three billion, one hundred eleven million, eight hundred eleven thousand, two hundred thirteen".