3103123212 has 144 divisors (see below), whose sum is σ = 9246549312. Its totient is φ = 859023360.

The previous prime is 3103123211. The next prime is 3103123213. The reversal of 3103123212 is 2123213013.

3103123212 is a `hidden beast` number, since 31 + 0 + 312 + 321 + 2 = 666.

It is an interprime number because it is at equal distance from previous prime (3103123211) and next prime (3103123213).

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

It is not an unprimeable number, because it can be changed into a prime (3103123211) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1621168 + ... + 1623080.

It is an arithmetic number, because the mean of its divisors is an integer number (64212148).

Almost surely, 2^3103123212 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 3103123212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4623274656).

3103123212 is an abundant number, since it is smaller than the sum of its proper divisors (6143426100).

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

3103123212 is a wasteful number, since it uses less digits than its factorization.

3103123212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2128 (or 2123 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 3103123212 is about 55705.6838392637. The cubic root of 3103123212 is about 1458.5892440091.

Adding to 3103123212 its reverse (2123213013), we get a palindrome (5226336225).

The spelling of 3103123212 in words is "three billion, one hundred three million, one hundred twenty-three thousand, two hundred twelve".