430130621 has 4 divisors (see below), whose sum is σ = 430433472. Its totient is φ = 429827772.

The previous prime is 430130609. The next prime is 430130629. The reversal of 430130621 is 126031034.

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: 126031034 = 2 ⋅63015517.

It is a cyclic number.

It is not a de Polignac number, because 430130621 - 2⁶ = 430130557 is a prime.

It is a super-2 number, since 2×430130621² = 370024702243691282, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 430130593 and 430130602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (430130629) 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, 149285 + ... + 152138.

It is an arithmetic number, because the mean of its divisors is an integer number (107608368).

Almost surely, 2^430130621 is an apocalyptic number.

It is an amenable number.

430130621 is a deficient number, since it is larger than the sum of its proper divisors (302851).

430130621 is a wasteful number, since it uses less digits than its factorization.

430130621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 302850.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 430130621 is about 20739.5906661631. The cubic root of 430130621 is about 754.8606505682.

Adding to 430130621 its reverse (126031034), we get a palindrome (556161655).

The spelling of 430130621 in words is "four hundred thirty million, one hundred thirty thousand, six hundred twenty-one".