130111028 has 12 divisors (see below), whose sum is σ = 229949412. Its totient is φ = 64411200.

The previous prime is 130111027. The next prime is 130111043. The reversal of 130111028 is 820111031.

It can be written as a sum of positive squares in 2 ways, for example, as 79245604 + 50865424 = 8902^2 + 7132^2 .

It is a junction number, because it is equal to n+sod(n) for n = 130110997 and 130111015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130111021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 160625 + ... + 161432.

It is an arithmetic number, because the mean of its divisors is an integer number (19162451).

Almost surely, 2^130111028 is an apocalyptic number.

It is an amenable number.

130111028 is a deficient number, since it is larger than the sum of its proper divisors (99838384).

130111028 is a wasteful number, since it uses less digits than its factorization.

130111028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 322162 (or 322160 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 17.

The square root of 130111028 is about 11406.6221117384. The cubic root of 130111028 is about 506.7238776194.

Adding to 130111028 its reverse (820111031), we get a palindrome (950222059).

The spelling of 130111028 in words is "one hundred thirty million, one hundred eleven thousand, twenty-eight".