3128319946 has 8 divisors (see below), whose sum is σ = 4695393924. Its totient is φ = 1563188640.

The previous prime is 3128319899. The next prime is 3128319979. The reversal of 3128319946 is 6499138213.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 3109735225 + 18584721 = 55765^2 + 4311^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 3128319896 and 3128319905.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 481635 + ... + 488086.

Almost surely, 2^3128319946 is an apocalyptic number.

3128319946 is a deficient number, since it is larger than the sum of its proper divisors (1567073978).

3128319946 is a wasteful number, since it uses less digits than its factorization.

3128319946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 971336.

The product of its digits is 279936, while the sum is 46.

The square root of 3128319946 is about 55931.3860547010. The cubic root of 3128319946 is about 1462.5264235224.

The spelling of 3128319946 in words is "three billion, one hundred twenty-eight million, three hundred nineteen thousand, nine hundred forty-six".