231422421 has 8 divisors (see below), whose sum is σ = 310411584. Its totient is φ = 153357440.

The previous prime is 231422417. The next prime is 231422423. The reversal of 231422421 is 124224132.

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 231422421 - 2² = 231422417 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231422423) 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, 230460 + ... + 231461.

It is an arithmetic number, because the mean of its divisors is an integer number (38801448).

Almost surely, 2^231422421 is an apocalyptic number.

It is an amenable number.

231422421 is a deficient number, since it is larger than the sum of its proper divisors (78989163).

231422421 is a wasteful number, since it uses less digits than its factorization.

231422421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 462091.

The product of its digits is 768, while the sum is 21.

The square root of 231422421 is about 15212.5744369584. The cubic root of 231422421 is about 613.9530259699.

Adding to 231422421 its reverse (124224132), we get a palindrome (355646553).

The spelling of 231422421 in words is "two hundred thirty-one million, four hundred twenty-two thousand, four hundred twenty-one".