3100111812 has 144 divisors (see below), whose sum is σ = 9508968000. Its totient is φ = 870645888.

The previous prime is 3100111799. The next prime is 3100111829. The reversal of 3100111812 is 2181110013.

It is a happy number.

It is a super-2 number, since 2×3100111812² = 19221386493803846688, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 307264 + ... + 317192.

It is an arithmetic number, because the mean of its divisors is an integer number (66034500).

Almost surely, 2^3100111812 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3100111812, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4754484000).

3100111812 is an abundant number, since it is smaller than the sum of its proper divisors (6408856188).

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

3100111812 is a wasteful number, since it uses less digits than its factorization.

3100111812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10015 (or 10000 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 18.

The square root of 3100111812 is about 55678.6477206478. The cubic root of 3100111812 is about 1458.1172660512.

Adding to 3100111812 its reverse (2181110013), we get a palindrome (5281221825).

The spelling of 3100111812 in words is "three billion, one hundred million, one hundred eleven thousand, eight hundred twelve".