345321320 has 32 divisors (see below), whose sum is σ = 778118400. Its totient is φ = 137924928.

The previous prime is 345321313. The next prime is 345321329. The reversal of 345321320 is 23123543.

It is not an unprimeable number, because it can be changed into a prime (345321329) 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, 22757 + ... + 34763.

It is an arithmetic number, because the mean of its divisors is an integer number (24316200).

Almost surely, 2^345321320 is an apocalyptic number.

It is an amenable number.

345321320 is an abundant number, since it is smaller than the sum of its proper divisors (432797080).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

345321320 is a wasteful number, since it uses less digits than its factorization.

345321320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12737 (or 12733 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 23.

The square root of 345321320 is about 18582.8232515945. The cubic root of 345321320 is about 701.5755802294.

Adding to 345321320 its reverse (23123543), we get a palindrome (368444863).

The spelling of 345321320 in words is "three hundred forty-five million, three hundred twenty-one thousand, three hundred twenty".