421131233 has 8 divisors (see below), whose sum is σ = 435986688. Its totient is φ = 406521504.

The previous prime is 421131209. The next prime is 421131253. The reversal of 421131233 is 332131124.

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 421131233 - 2⁸ = 421130977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (421131253) 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, 57941 + ... + 64802.

It is an arithmetic number, because the mean of its divisors is an integer number (54498336).

Almost surely, 2^421131233 is an apocalyptic number.

It is an amenable number.

421131233 is a deficient number, since it is larger than the sum of its proper divisors (14855455).

421131233 is a wasteful number, since it uses less digits than its factorization.

421131233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122863.

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

The square root of 421131233 is about 20521.4822320416. The cubic root of 421131233 is about 749.5589899162.

Adding to 421131233 its reverse (332131124), we get a palindrome (753262357).

The spelling of 421131233 in words is "four hundred twenty-one million, one hundred thirty-one thousand, two hundred thirty-three".