345230340 has 192 divisors, whose sum is σ = 1213180416. Its totient is φ = 71405568.

The previous prime is 345230321. The next prime is 345230357. The reversal of 345230340 is 43032543.

It is a self number, because there is not a number n which added to its sum of digits gives 345230340.

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 63 ways as a sum of consecutive naturals, for example, 288784 + ... + 289976.

It is an arithmetic number, because the mean of its divisors is an integer number (6318648).

Almost surely, 2^345230340 is an apocalyptic number.

345230340 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 345230340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (606590208).

345230340 is an abundant number, since it is smaller than the sum of its proper divisors (867950076).

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

345230340 is a wasteful number, since it uses less digits than its factorization.

345230340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1278 (or 1276 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 24.

The square root of 345230340 is about 18580.3751307663. The cubic root of 345230340 is about 701.5139613361.

Adding to 345230340 its reverse (43032543), we get a palindrome (388262883).

The spelling of 345230340 in words is "three hundred forty-five million, two hundred thirty thousand, three hundred forty".