130443231 has 4 divisors (see below), whose sum is σ = 173924312. Its totient is φ = 86962152.

The previous prime is 130443223. The next prime is 130443251. The reversal of 130443231 is 132344031.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 130443231 - 2³ = 130443223 is a prime.

It is a super-2 number, since 2×130443231² = 34030873027438722, which contains 22 as substring.

It is a Duffinian number.

It is a plaindrome in base 14.

It is a junction number, because it is equal to n+sod(n) for n = 130443198 and 130443207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130443221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21740536 + ... + 21740541.

It is an arithmetic number, because the mean of its divisors is an integer number (43481078).

Almost surely, 2^130443231 is an apocalyptic number.

130443231 is a deficient number, since it is larger than the sum of its proper divisors (43481081).

130443231 is an equidigital number, since it uses as much as digits as its factorization.

130443231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43481080.

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 130443231 is about 11421.1746768885. The cubic root of 130443231 is about 507.1547714793.

Adding to 130443231 its reverse (132344031), we get a palindrome (262787262).

The spelling of 130443231 in words is "one hundred thirty million, four hundred forty-three thousand, two hundred thirty-one".