130728233 has 2 divisors, whose sum is σ = 130728234. Its totient is φ = 130728232.

The previous prime is 130728229. The next prime is 130728287. The reversal of 130728233 is 332827031.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 111788329 + 18939904 = 10573^2 + 4352^2 .

It is a cyclic number.

It is not a de Polignac number, because 130728233 - 2² = 130728229 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 130728196 and 130728205.

It is not a weakly prime, because it can be changed into another prime (130728203) 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 as a sum of consecutive naturals, namely, 65364116 + 65364117.

It is an arithmetic number, because the mean of its divisors is an integer number (65364117).

Almost surely, 2^130728233 is an apocalyptic number.

It is an amenable number.

130728233 is a deficient number, since it is larger than the sum of its proper divisors (1).

130728233 is an equidigital number, since it uses as much as digits as its factorization.

130728233 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6048, while the sum is 29.

The square root of 130728233 is about 11433.6447819582. The cubic root of 130728233 is about 507.5238592001.

The spelling of 130728233 in words is "one hundred thirty million, seven hundred twenty-eight thousand, two hundred thirty-three".