130928281 has 4 divisors (see below), whose sum is σ = 142830864. Its totient is φ = 119025700.

The previous prime is 130928261. The next prime is 130928299. The reversal of 130928281 is 182829031.

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 not a de Polignac number, because 130928281 - 2²³ = 122539673 is a prime.

It is a super-2 number, since 2×130928281² = 34284429531229922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (130928261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5951275 + ... + 5951296.

It is an arithmetic number, because the mean of its divisors is an integer number (35707716).

Almost surely, 2^130928281 is an apocalyptic number.

130928281 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

130928281 is a deficient number, since it is larger than the sum of its proper divisors (11902583).

130928281 is a wasteful number, since it uses less digits than its factorization.

130928281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11902582.

The product of its (nonzero) digits is 6912, while the sum is 34.

The square root of 130928281 is about 11442.3896542637. The cubic root of 130928281 is about 507.7826081737.

The spelling of 130928281 in words is "one hundred thirty million, nine hundred twenty-eight thousand, two hundred eighty-one".