130303821 has 8 divisors (see below), whose sum is σ = 173829600. Its totient is φ = 86823632.

The previous prime is 130303813. The next prime is 130303853. The reversal of 130303821 is 128303031.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 130303821 - 2³ = 130303813 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130303871) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4050 + ... + 16643.

It is an arithmetic number, because the mean of its divisors is an integer number (21728700).

Almost surely, 2^130303821 is an apocalyptic number.

It is an amenable number.

130303821 is a deficient number, since it is larger than the sum of its proper divisors (43525779).

130303821 is a wasteful number, since it uses less digits than its factorization.

130303821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22795.

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 130303821 is about 11415.0699078017. The cubic root of 130303821 is about 506.9740347490.

Adding to 130303821 its reverse (128303031), we get a palindrome (258606852).

The spelling of 130303821 in words is "one hundred thirty million, three hundred three thousand, eight hundred twenty-one".