345811216 has 15 divisors (see below), whose sum is σ = 670153381. Its totient is φ = 172868416.

The previous prime is 345811201. The next prime is 345811223. The reversal of 345811216 is 612118543.

The square root of 345811216 is 18596.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 338412816 + 7398400 = 18396^2 + 2720^2 .

It is a super-2 number, since 2×345811216² = 239170794222797312, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 72060 + ... + 76708.

Almost surely, 2^345811216 is an apocalyptic number.

345811216 is the 18596-th square number.

It is an amenable number.

345811216 is a deficient number, since it is larger than the sum of its proper divisors (324342165).

345811216 is an frugal number, since it uses more digits than its factorization.

345811216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9306 (or 4651 counting only the distinct ones).

The product of its digits is 5760, while the sum is 31.

The cubic root of 345811216 is about 701.9071908647.

Adding to 345811216 its reverse (612118543), we get a palindrome (957929759).

The spelling of 345811216 in words is "three hundred forty-five million, eight hundred eleven thousand, two hundred sixteen".