3123020012 has 24 divisors (see below), whose sum is σ = 6247829280. Its totient is φ = 1338053760.

The previous prime is 3123020009. The next prime is 3123020023. The reversal of 3123020012 is 2100203213.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 97712 + ... + 125672.

It is an arithmetic number, because the mean of its divisors is an integer number (260326220).

Almost surely, 2^3123020012 is an apocalyptic number.

It is an amenable number.

3123020012 is an abundant number, since it is smaller than the sum of its proper divisors (3124809268).

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

3123020012 is a wasteful number, since it uses less digits than its factorization.

3123020012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31961 (or 31959 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 3123020012 is about 55883.9870803793. The cubic root of 3123020012 is about 1461.7000294689.

Adding to 3123020012 its reverse (2100203213), we get a palindrome (5223223225).

The spelling of 3123020012 in words is "three billion, one hundred twenty-three million, twenty thousand, twelve".