234540474221 has 4 divisors (see below), whose sum is σ = 235280349852. Its totient is φ = 233800598592.

The previous prime is 234540474191. The next prime is 234540474317. The reversal of 234540474221 is 122474045432.

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 69306354121 + 165234120100 = 263261^2 + 406490^2 .

It is a cyclic number.

It is not a de Polignac number, because 234540474221 - 2³⁰ = 233466732397 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 (234540474521) 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, 369937340 + ... + 369937973.

It is an arithmetic number, because the mean of its divisors is an integer number (58820087463).

Almost surely, 2^234540474221 is an apocalyptic number.

It is an amenable number.

234540474221 is a deficient number, since it is larger than the sum of its proper divisors (739875631).

234540474221 is an equidigital number, since it uses as much as digits as its factorization.

234540474221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 739875630.

The product of its (nonzero) digits is 215040, while the sum is 38.

The spelling of 234540474221 in words is "two hundred thirty-four billion, five hundred forty million, four hundred seventy-four thousand, two hundred twenty-one".