345521421313223 has 8 divisors (see below), whose sum is σ = 352873530682560. Its totient is φ = 338169336517600.

The previous prime is 345521421313183. The next prime is 345521421313231. The reversal of 345521421313223 is 322313124125543.

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 345521421313223 - 2¹⁴ = 345521421296839 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (345521421313253) 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, 23814893 + ... + 35471001.

It is an arithmetic number, because the mean of its divisors is an integer number (44109191335320).

Almost surely, 2^{345521421313223} is an apocalyptic number.

345521421313223 is a deficient number, since it is larger than the sum of its proper divisors (7352109369337).

345521421313223 is a wasteful number, since it uses less digits than its factorization.

345521421313223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12286857.

The product of its digits is 518400, while the sum is 41.

Adding to 345521421313223 its reverse (322313124125543), we get a palindrome (667834545438766).

The spelling of 345521421313223 in words is "three hundred forty-five trillion, five hundred twenty-one billion, four hundred twenty-one million, three hundred thirteen thousand, two hundred twenty-three".