231421443343 has 8 divisors (see below), whose sum is σ = 245137080240. Its totient is φ = 217717207680.

The previous prime is 231421443317. The next prime is 231421443391. The reversal of 231421443343 is 343344124132.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-231421443343 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 231421443299 and 231421443308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231421413343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2808493 + ... + 2889718.

It is an arithmetic number, because the mean of its divisors is an integer number (30642135030).

Almost surely, 2^231421443343 is an apocalyptic number.

231421443343 is a deficient number, since it is larger than the sum of its proper divisors (13715636897).

231421443343 is a wasteful number, since it uses less digits than its factorization.

231421443343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5700617.

The product of its digits is 82944, while the sum is 34.

Adding to 231421443343 its reverse (343344124132), we get a palindrome (574765567475).

The spelling of 231421443343 in words is "two hundred thirty-one billion, four hundred twenty-one million, four hundred forty-three thousand, three hundred forty-three".