345023320 has 32 divisors (see below), whose sum is σ = 789034320. Its totient is φ = 135745920.

The previous prime is 345023317. The next prime is 345023333. The reversal of 345023320 is 23320543.

It is a junction number, because it is equal to n+sod(n) for n = 345023291 and 345023300.

It is a congruent 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 7 ways as a sum of consecutive naturals, for example, 68262 + ... + 73141.

Almost surely, 2^345023320 is an apocalyptic number.

It is an amenable number.

345023320 is an abundant number, since it is smaller than the sum of its proper divisors (444011000).

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

345023320 is a wasteful number, since it uses less digits than its factorization.

345023320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141475 (or 141471 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 22.

The square root of 345023320 is about 18574.8033636967. The cubic root of 345023320 is about 701.3737105702.

Adding to 345023320 its reverse (23320543), we get a palindrome (368343863).

The spelling of 345023320 in words is "three hundred forty-five million, twenty-three thousand, three hundred twenty".