345512223 has 48 divisors (see below), whose sum is σ = 594746880. Its totient is φ = 196351776.

The previous prime is 345512221. The next prime is 345512227. The reversal of 345512223 is 322215543.

It is a happy number.

It is not a de Polignac number, because 345512223 - 2¹ = 345512221 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (345512221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 389086 + ... + 389972.

It is an arithmetic number, because the mean of its divisors is an integer number (12390560).

Almost surely, 2^345512223 is an apocalyptic number.

345512223 is a deficient number, since it is larger than the sum of its proper divisors (249234657).

345512223 is an equidigital number, since it uses as much as digits as its factorization.

345512223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1138 (or 1126 counting only the distinct ones).

The product of its digits is 7200, while the sum is 27.

The square root of 345512223 is about 18587.9590864624. The cubic root of 345512223 is about 701.7048397550.

Adding to 345512223 its reverse (322215543), we get a palindrome (667727766).

The spelling of 345512223 in words is "three hundred forty-five million, five hundred twelve thousand, two hundred twenty-three".