3111213444 has 48 divisors (see below), whose sum is σ = 7888097280. Its totient is φ = 950793120.

The previous prime is 3111213433. The next prime is 3111213481. The reversal of 3111213444 is 4443121113.

It is a super-2 number, since 2×3111213444² = 19359298188252682272, which contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 213024 + ... + 227159.

It is an arithmetic number, because the mean of its divisors is an integer number (164335360).

Almost surely, 2^3111213444 is an apocalyptic number.

It is an amenable number.

3111213444 is an abundant number, since it is smaller than the sum of its proper divisors (4776883836).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3111213444 is a wasteful number, since it uses less digits than its factorization.

3111213444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 440240 (or 440238 counting only the distinct ones).

The product of its digits is 1152, while the sum is 24.

The square root of 3111213444 is about 55778.2524287020. The cubic root of 3111213444 is about 1459.8557191507.

Adding to 3111213444 its reverse (4443121113), we get a palindrome (7554334557).

The spelling of 3111213444 in words is "three billion, one hundred eleven million, two hundred thirteen thousand, four hundred forty-four".