234355440313021 has 4 divisors (see below), whose sum is σ = 234355490976700. Its totient is φ = 234355389649344.

The previous prime is 234355440312979. The next prime is 234355440313067. The reversal of 234355440313021 is 120313044553432.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6537169990521 + 227818270322500 = 2556789^2 + 15093650^2 .

It is a cyclic number.

It is not a de Polignac number, because 234355440313021 - 2⁷ = 234355440312893 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (234355440313721) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17608326 + ... + 27906343.

It is an arithmetic number, because the mean of its divisors is an integer number (58588872744175).

Almost surely, 2^{234355440313021} is an apocalyptic number.

It is an amenable number.

234355440313021 is a deficient number, since it is larger than the sum of its proper divisors (50663679).

234355440313021 is an equidigital number, since it uses as much as digits as its factorization.

234355440313021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50663678.

The product of its (nonzero) digits is 518400, while the sum is 40.

Adding to 234355440313021 its reverse (120313044553432), we get a palindrome (354668484866453).

The spelling of 234355440313021 in words is "two hundred thirty-four trillion, three hundred fifty-five billion, four hundred forty million, three hundred thirteen thousand, twenty-one".