343520545 has 4 divisors (see below), whose sum is σ = 412224660. Its totient is φ = 274816432.

The previous prime is 343520539. The next prime is 343520557. The reversal of 343520545 is 545025343.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 258309184 + 85211361 = 16072^2 + 9231^2 .

It is a cyclic number.

It is not a de Polignac number, because 343520545 - 2⁷ = 343520417 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34352050 + ... + 34352059.

It is an arithmetic number, because the mean of its divisors is an integer number (103056165).

Almost surely, 2^343520545 is an apocalyptic number.

It is an amenable number.

343520545 is a deficient number, since it is larger than the sum of its proper divisors (68704115).

343520545 is an equidigital number, since it uses as much as digits as its factorization.

343520545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68704114.

The product of its (nonzero) digits is 36000, while the sum is 31.

The square root of 343520545 is about 18534.3072435956. The cubic root of 343520545 is about 700.3539332594.

Adding to 343520545 its reverse (545025343), we get a palindrome (888545888).

The spelling of 343520545 in words is "three hundred forty-three million, five hundred twenty thousand, five hundred forty-five".