421313231 has 8 divisors (see below), whose sum is σ = 427109760. Its totient is φ = 415552032.

The previous prime is 421313213. The next prime is 421313251. The reversal of 421313231 is 132313124.

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 421313231 - 2¹⁴ = 421296847 is a prime.

It is a super-2 number, since 2×421313231² = 355009677231318722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421313251) 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, 15641 + ... + 32973.

It is an arithmetic number, because the mean of its divisors is an integer number (53388720).

Almost surely, 2^421313231 is an apocalyptic number.

421313231 is a deficient number, since it is larger than the sum of its proper divisors (5796529).

421313231 is a wasteful number, since it uses less digits than its factorization.

421313231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17665.

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

The square root of 421313231 is about 20525.9160818707. The cubic root of 421313231 is about 749.6669519791. Note that the first 3 decimals are identical.

Adding to 421313231 its reverse (132313124), we get a palindrome (553626355).

The spelling of 421313231 in words is "four hundred twenty-one million, three hundred thirteen thousand, two hundred thirty-one".