130439321 has 4 divisors (see below), whose sum is σ = 130935552. Its totient is φ = 129943092.

The previous prime is 130439311. The next prime is 130439329. The reversal of 130439321 is 123934031.

It is a happy number.

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: 123934031 = 13 ⋅9533387.

It is a cyclic number.

It is not a de Polignac number, because 130439321 - 2²² = 126245017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (130439329) 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, 247721 + ... + 248246.

It is an arithmetic number, because the mean of its divisors is an integer number (32733888).

Almost surely, 2^130439321 is an apocalyptic number.

It is an amenable number.

130439321 is a deficient number, since it is larger than the sum of its proper divisors (496231).

130439321 is an equidigital number, since it uses as much as digits as its factorization.

130439321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 496230.

The product of its (nonzero) digits is 1944, while the sum is 26.

The square root of 130439321 is about 11421.0035023198. The cubic root of 130439321 is about 507.1497041537.

The spelling of 130439321 in words is "one hundred thirty million, four hundred thirty-nine thousand, three hundred twenty-one".