3161128 has 8 divisors (see below), whose sum is σ = 5927130. Its totient is φ = 1580560.

The previous prime is 3161107. The next prime is 3161129. The reversal of 3161128 is 8211613.

It can be written as a sum of positive squares in only one way, i.e., 2748964 + 412164 = 1658^2 + 642^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 3161099 and 3161108.

It is not an unprimeable number, because it can be changed into a prime (3161129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 197563 + ... + 197578.

Almost surely, 2^3161128 is an apocalyptic number.

It is an amenable number.

3161128 is a deficient number, since it is larger than the sum of its proper divisors (2766002).

3161128 is a wasteful number, since it uses less digits than its factorization.

3161128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 395147 (or 395143 counting only the distinct ones).

The product of its digits is 288, while the sum is 22.

The square root of 3161128 is about 1777.9561299425. The cubic root of 3161128 is about 146.7621371069.

It can be divided in two parts, 316 and 1128, that added together give a square (1444 = 38²).

The spelling of 3161128 in words is "three million, one hundred sixty-one thousand, one hundred twenty-eight".