421333231 has 8 divisors (see below), whose sum is σ = 460347984. Its totient is φ = 382437120.

The previous prime is 421333217. The next prime is 421333267. The reversal of 421333231 is 132333124.

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 421333231 - 2⁷ = 421333103 is a prime.

It is a super-2 number, since 2×421333231² = 355043383089798722, 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 (421333631) 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, 22146 + ... + 36511.

It is an arithmetic number, because the mean of its divisors is an integer number (57543498).

Almost surely, 2^421333231 is an apocalyptic number.

421333231 is a deficient number, since it is larger than the sum of its proper divisors (39014753).

421333231 is a wasteful number, since it uses less digits than its factorization.

421333231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59321.

The product of its digits is 1296, while the sum is 22.

The square root of 421333231 is about 20526.4032650633. The cubic root of 421333231 is about 749.6788141762.

Adding to 421333231 its reverse (132333124), we get a palindrome (553666355).

The spelling of 421333231 in words is "four hundred twenty-one million, three hundred thirty-three thousand, two hundred thirty-one".