343145720 has 32 divisors (see below), whose sum is σ = 772675200. Its totient is φ = 137152128.

The previous prime is 343145669. The next prime is 343145729. The reversal of 343145720 is 27541343.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (343145729) 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, 67922 + ... + 72798.

It is an arithmetic number, because the mean of its divisors is an integer number (24146100).

Almost surely, 2^343145720 is an apocalyptic number.

It is an amenable number.

343145720 is an abundant number, since it is smaller than the sum of its proper divisors (429529480).

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

343145720 is a wasteful number, since it uses less digits than its factorization.

343145720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6647 (or 6643 counting only the distinct ones).

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

The square root of 343145720 is about 18524.1928299184. The cubic root of 343145720 is about 700.0991152170.

The spelling of 343145720 in words is "three hundred forty-three million, one hundred forty-five thousand, seven hundred twenty".