345320346 has 48 divisors (see below), whose sum is σ = 829336320. Its totient is φ = 95477760.

The previous prime is 345320317. The next prime is 345320347. The reversal of 345320346 is 643023543.

It is a super-2 number, since 2×345320346² = 238492282723119432, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (345320347) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9831 + ... + 28058.

It is an arithmetic number, because the mean of its divisors is an integer number (17277840).

Almost surely, 2^345320346 is an apocalyptic number.

345320346 is an abundant number, since it is smaller than the sum of its proper divisors (484015974).

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

345320346 is a wasteful number, since it uses less digits than its factorization.

345320346 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37939 (or 37932 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 30.

The square root of 345320346 is about 18582.7970445786. The cubic root of 345320346 is about 701.5749206165.

Adding to 345320346 its reverse (643023543), we get a palindrome (988343889).

The spelling of 345320346 in words is "three hundred forty-five million, three hundred twenty thousand, three hundred forty-six".