3123700000 has 72 divisors (see below), whose sum is σ = 7686984564. Its totient is φ = 1249440000.

The previous prime is 3123699979. The next prime is 3123700009. The reversal of 3123700000 is 73213.

It can be written as a sum of positive squares in 6 ways, for example, as 59413264 + 3064286736 = 7708^2 + 55356^2 .

It is a Harshad number since it is a multiple of its sum of digits (16).

It is not an unprimeable number, because it can be changed into a prime (3123700009) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 84382 + ... + 115618.

Almost surely, 2^3123700000 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 3123700000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3843492282).

3123700000 is an abundant number, since it is smaller than the sum of its proper divisors (4563284564).

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

3123700000 is an frugal number, since it uses more digits than its factorization.

3123700000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31272 (or 31244 counting only the distinct ones).

The product of its (nonzero) digits is 126, while the sum is 16.

The square root of 3123700000 is about 55890.0706744946. The cubic root of 3123700000 is about 1461.8061090913.

Adding to 3123700000 its reverse (73213), we get a palindrome (3123773213).

The spelling of 3123700000 in words is "three billion, one hundred twenty-three million, seven hundred thousand".