3128165201 has 4 divisors (see below), whose sum is σ = 3575045952. Its totient is φ = 2681284452.

The previous prime is 3128165197. The next prime is 3128165207. The reversal of 3128165201 is 1025618213.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1025618213 = 1543 ⋅664691.

It is not a de Polignac number, because 3128165201 - 2² = 3128165197 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3128165207) 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, 223440365 + ... + 223440378.

It is an arithmetic number, because the mean of its divisors is an integer number (893761488).

Almost surely, 2^3128165201 is an apocalyptic number.

It is an amenable number.

3128165201 is a deficient number, since it is larger than the sum of its proper divisors (446880751).

3128165201 is an equidigital number, since it uses as much as digits as its factorization.

3128165201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 446880750.

The product of its (nonzero) digits is 2880, while the sum is 29.

The square root of 3128165201 is about 55930.0026908635. The cubic root of 3128165201 is about 1462.5023080880.

The spelling of 3128165201 in words is "three billion, one hundred twenty-eight million, one hundred sixty-five thousand, two hundred one".