345217340 has 24 divisors (see below), whose sum is σ = 780722880. Its totient is φ = 127464768.

The previous prime is 345217337. The next prime is 345217349. The reversal of 345217340 is 43712543.

It is a happy number.

345217340 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (345217349) 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, 663620 + ... + 664139.

It is an arithmetic number, because the mean of its divisors is an integer number (32530120).

Almost surely, 2^345217340 is an apocalyptic number.

It is an amenable number.

345217340 is an abundant number, since it is smaller than the sum of its proper divisors (435505540).

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

345217340 is a wasteful number, since it uses less digits than its factorization.

345217340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1327781 (or 1327779 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 29.

The square root of 345217340 is about 18580.0252960000. The cubic root of 345217340 is about 701.5051558181.

Adding to 345217340 its reverse (43712543), we get a palindrome (388929883).

The spelling of 345217340 in words is "three hundred forty-five million, two hundred seventeen thousand, three hundred forty".