350405512321 has 8 divisors (see below), whose sum is σ = 356338521000. Its totient is φ = 344478589440.

The previous prime is 350405512319. The next prime is 350405512393. The reversal of 350405512321 is 123215504053.

It can be written as a sum of positive squares in 4 ways, for example, as 7523827600 + 342881684721 = 86740^2 + 585561^2 .

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 350405512321 - 2¹ = 350405512319 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (350405510321) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1405246 + ... + 1635703.

It is an arithmetic number, because the mean of its divisors is an integer number (44542315125).

Almost surely, 2^350405512321 is an apocalyptic number.

It is an amenable number.

350405512321 is a deficient number, since it is larger than the sum of its proper divisors (5933008679).

350405512321 is a wasteful number, since it uses less digits than its factorization.

350405512321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3042899.

The product of its (nonzero) digits is 18000, while the sum is 31.

The spelling of 350405512321 in words is "three hundred fifty billion, four hundred five million, five hundred twelve thousand, three hundred twenty-one".