3128884361 has 4 divisors (see below), whose sum is σ = 3129830400. Its totient is φ = 3127938324.

The previous prime is 3128884351. The next prime is 3128884387. The reversal of 3128884361 is 1634888213.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3128884361 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3128884321) 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, 468041 + ... + 474678.

It is an arithmetic number, because the mean of its divisors is an integer number (782457600).

Almost surely, 2^3128884361 is an apocalyptic number.

It is an amenable number.

3128884361 is a deficient number, since it is larger than the sum of its proper divisors (946039).

3128884361 is an equidigital number, since it uses as much as digits as its factorization.

3128884361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 946038.

The product of its digits is 221184, while the sum is 44.

The square root of 3128884361 is about 55936.4314288997. The cubic root of 3128884361 is about 1462.6143751201.

The spelling of 3128884361 in words is "three billion, one hundred twenty-eight million, eight hundred eighty-four thousand, three hundred sixty-one".