343820945 has 16 divisors (see below), whose sum is σ = 445916352. Its totient is φ = 252987840.

The previous prime is 343820929. The next prime is 343820947. The reversal of 343820945 is 549028343.

It is not a de Polignac number, because 343820945 - 2⁴ = 343820929 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 343820899 and 343820908.

It is not an unprimeable number, because it can be changed into a prime (343820947) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9050 + ... + 27740.

It is an arithmetic number, because the mean of its divisors is an integer number (27869772).

Almost surely, 2^343820945 is an apocalyptic number.

It is an amenable number.

343820945 is a deficient number, since it is larger than the sum of its proper divisors (102095407).

343820945 is a wasteful number, since it uses less digits than its factorization.

343820945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18992.

The product of its (nonzero) digits is 103680, while the sum is 38.

The square root of 343820945 is about 18542.4093634026. The cubic root of 343820945 is about 700.5580210289.

The spelling of 343820945 in words is "three hundred forty-three million, eight hundred twenty thousand, nine hundred forty-five".