421130431 has 8 divisors (see below), whose sum is σ = 435938400. Its totient is φ = 406341600.

The previous prime is 421130429. The next prime is 421130449. The reversal of 421130431 is 134031124.

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 421130431 - 2¹ = 421130429 is a prime.

It is a super-2 number, since 2×421130431² = 354701679828491522, 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 = 421130399 and 421130408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421130401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51310 + ... + 58948.

It is an arithmetic number, because the mean of its divisors is an integer number (54492300).

Almost surely, 2^421130431 is an apocalyptic number.

421130431 is a deficient number, since it is larger than the sum of its proper divisors (14807969).

421130431 is a wasteful number, since it uses less digits than its factorization.

421130431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9569.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 421130431 is about 20521.4626915335. The cubic root of 421130431 is about 749.5585140972.

Adding to 421130431 its reverse (134031124), we get a palindrome (555161555).

The spelling of 421130431 in words is "four hundred twenty-one million, one hundred thirty thousand, four hundred thirty-one".