340551020321 has 8 divisors (see below), whose sum is σ = 341071010280. Its totient is φ = 340031317888.

The previous prime is 340551020291. The next prime is 340551020333. The reversal of 340551020321 is 123020155043.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 73949188096 + 266601832225 = 271936^2 + 516335^2 .

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 340551020321 - 2¹⁴ = 340551003937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (340551020021) 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, 2361275 + ... + 2501343.

It is an arithmetic number, because the mean of its divisors is an integer number (42633876285).

Almost surely, 2^340551020321 is an apocalyptic number.

It is an amenable number.

340551020321 is a deficient number, since it is larger than the sum of its proper divisors (519989959).

340551020321 is a wasteful number, since it uses less digits than its factorization.

340551020321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143763.

The product of its (nonzero) digits is 3600, while the sum is 26.

Adding to 340551020321 its reverse (123020155043), we get a palindrome (463571175364).

The spelling of 340551020321 in words is "three hundred forty billion, five hundred fifty-one million, twenty thousand, three hundred twenty-one".