232431421 has 8 divisors (see below), whose sum is σ = 235346040. Its totient is φ = 229523712.

The previous prime is 232431377. The next prime is 232431439. The reversal of 232431421 is 124134232.

It can be written as a sum of positive squares in 4 ways, for example, as 22905796 + 209525625 = 4786^2 + 14475^2 .

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 232431421 - 2⁹ = 232430909 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 232431392 and 232431401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (232431461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 106881 + ... + 109033.

It is an arithmetic number, because the mean of its divisors is an integer number (29418255).

Almost surely, 2^232431421 is an apocalyptic number.

It is an amenable number.

232431421 is a deficient number, since it is larger than the sum of its proper divisors (2914619).

232431421 is a wasteful number, since it uses less digits than its factorization.

232431421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3455.

The product of its digits is 1152, while the sum is 22.

The square root of 232431421 is about 15245.7017221248. The cubic root of 232431421 is about 614.8440091737.

Adding to 232431421 its reverse (124134232), we get a palindrome (356565653).

The spelling of 232431421 in words is "two hundred thirty-two million, four hundred thirty-one thousand, four hundred twenty-one".