351543420541321 has 4 divisors (see below), whose sum is σ = 351605607601732. Its totient is φ = 351481233480912.

The previous prime is 351543420541319. The next prime is 351543420541337. The reversal of 351543420541321 is 123145024345153.

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 291522158960400 + 60021261580921 = 17074020^2 + 7747339^2 .

It is a cyclic number.

It is not a de Polignac number, because 351543420541321 - 2¹ = 351543420541319 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (351543420541021) 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, 31093521726 + ... + 31093533031.

It is an arithmetic number, because the mean of its divisors is an integer number (87901401900433).

Almost surely, 2^{351543420541321} is an apocalyptic number.

It is an amenable number.

351543420541321 is a deficient number, since it is larger than the sum of its proper divisors (62187060411).

351543420541321 is an equidigital number, since it uses as much as digits as its factorization.

351543420541321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62187060410.

The product of its (nonzero) digits is 864000, while the sum is 43.

Adding to 351543420541321 its reverse (123145024345153), we get a palindrome (474688444886474).

The spelling of 351543420541321 in words is "three hundred fifty-one trillion, five hundred forty-three billion, four hundred twenty million, five hundred forty-one thousand, three hundred twenty-one".