3123128468 has 12 divisors (see below), whose sum is σ = 5493219732. Its totient is φ = 1553637120.

The previous prime is 3123128461. The next prime is 3123128471. The reversal of 3123128468 is 8648213213.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1949928964 + 1173199504 = 44158^2 + 34252^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3123128461) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1980893 + ... + 1982468.

It is an arithmetic number, because the mean of its divisors is an integer number (457768311).

Almost surely, 2^3123128468 is an apocalyptic number.

It is an amenable number.

3123128468 is a deficient number, since it is larger than the sum of its proper divisors (2370091264).

3123128468 is a wasteful number, since it uses less digits than its factorization.

3123128468 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3963562 (or 3963560 counting only the distinct ones).

The product of its digits is 55296, while the sum is 38.

The square root of 3123128468 is about 55884.9574393682. The cubic root of 3123128468 is about 1461.7169498753.

The spelling of 3123128468 in words is "three billion, one hundred twenty-three million, one hundred twenty-eight thousand, four hundred sixty-eight".