3123404388 has 72 divisors (see below), whose sum is σ = 8817547648. Its totient is φ = 961043616.

The previous prime is 3123404387. The next prime is 3123404399. The reversal of 3123404388 is 8834043213.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (3123404387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 110956 + ... + 136227.

Almost surely, 2^3123404388 is an apocalyptic number.

It is an amenable number.

3123404388 is an abundant number, since it is smaller than the sum of its proper divisors (5694143260).

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

3123404388 is a wasteful number, since it uses less digits than its factorization.

3123404388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247215 (or 247201 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 36.

The square root of 3123404388 is about 55887.4260276853. The cubic root of 3123404388 is about 1461.7599948614.

The spelling of 3123404388 in words is "three billion, one hundred twenty-three million, four hundred four thousand, three hundred eighty-eight".