343020145 has 24 divisors (see below), whose sum is σ = 456640632. Its totient is φ = 247104000.

The previous prime is 343020131. The next prime is 343020157. The reversal of 343020145 is 541020343.

It can be written as a sum of positive squares in 12 ways, for example, as 191656336 + 151363809 = 13844^2 + 12303^2 .

It is not a de Polignac number, because 343020145 - 2⁷ = 343020017 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 29695 + ... + 39595.

It is an arithmetic number, because the mean of its divisors is an integer number (19026693).

Almost surely, 2^343020145 is an apocalyptic number.

It is an amenable number.

343020145 is a deficient number, since it is larger than the sum of its proper divisors (113620487).

343020145 is a wasteful number, since it uses less digits than its factorization.

343020145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9973 (or 9960 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 343020145 is about 18520.8030333460. The cubic root of 343020145 is about 700.0137038134.

Adding to 343020145 its reverse (541020343), we get a palindrome (884040488).

The spelling of 343020145 in words is "three hundred forty-three million, twenty thousand, one hundred forty-five".