130443621 has 32 divisors (see below), whose sum is σ = 219027456. Its totient is φ = 67080000.

The previous prime is 130443617. The next prime is 130443647. The reversal of 130443621 is 126344031.

It is not a de Polignac number, because 130443621 - 2² = 130443617 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 130443591 and 130443600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130443661) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20536 + ... + 26126.

It is an arithmetic number, because the mean of its divisors is an integer number (6844608).

Almost surely, 2^130443621 is an apocalyptic number.

130443621 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

130443621 is a deficient number, since it is larger than the sum of its proper divisors (88583835).

130443621 is a wasteful number, since it uses less digits than its factorization.

130443621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5713.

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 130443621 is about 11421.1917504260. The cubic root of 130443621 is about 507.1552769103.

Adding to 130443621 its reverse (126344031), we get a palindrome (256787652).

The spelling of 130443621 in words is "one hundred thirty million, four hundred forty-three thousand, six hundred twenty-one".