306213603221345 has 8 divisors (see below), whose sum is σ = 369889809455040. Its totient is φ = 243348558850800.

The previous prime is 306213603221329. The next prime is 306213603221419. The reversal of 306213603221345 is 543122306312603.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 306213603221345 - 2⁴ = 306213603221329 is a prime.

It is a super-2 number, since 2×306213603221345² (a number of 30 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 202790464955 + ... + 202790466464.

It is an arithmetic number, because the mean of its divisors is an integer number (46236226181880).

Almost surely, 2^{306213603221345} is an apocalyptic number.

It is an amenable number.

306213603221345 is a deficient number, since it is larger than the sum of its proper divisors (63676206233695).

306213603221345 is a wasteful number, since it uses less digits than its factorization.

306213603221345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 405580931575.

The product of its (nonzero) digits is 466560, while the sum is 41.

Adding to 306213603221345 its reverse (543122306312603), we get a palindrome (849335909533948).

The spelling of 306213603221345 in words is "three hundred six trillion, two hundred thirteen billion, six hundred three million, two hundred twenty-one thousand, three hundred forty-five".