345217006321 has 4 divisors (see below), whose sum is σ = 376600370544. Its totient is φ = 313833642100.

The previous prime is 345217006319. The next prime is 345217006327. The reversal of 345217006321 is 123600712543.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 345217006321 - 2¹ = 345217006319 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (345217006327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15691682095 + ... + 15691682116.

It is an arithmetic number, because the mean of its divisors is an integer number (94150092636).

Almost surely, 2^345217006321 is an apocalyptic number.

It is an amenable number.

345217006321 is a deficient number, since it is larger than the sum of its proper divisors (31383364223).

345217006321 is a wasteful number, since it uses less digits than its factorization.

345217006321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31383364222.

The product of its (nonzero) digits is 30240, while the sum is 34.

Adding to 345217006321 its reverse (123600712543), we get a palindrome (468817718864).

The spelling of 345217006321 in words is "three hundred forty-five billion, two hundred seventeen million, six thousand, three hundred twenty-one".