344140545 has 32 divisors (see below), whose sum is σ = 630040320. Its totient is φ = 157132800.

The previous prime is 344140543. The next prime is 344140561. The reversal of 344140545 is 545041443.

It is not a de Polignac number, because 344140545 - 2¹ = 344140543 is a prime.

It is not an unprimeable number, because it can be changed into a prime (344140541) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 124741 + ... + 127469.

It is an arithmetic number, because the mean of its divisors is an integer number (19688760).

Almost surely, 2^344140545 is an apocalyptic number.

344140545 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

344140545 is a deficient number, since it is larger than the sum of its proper divisors (285899775).

344140545 is a wasteful number, since it uses less digits than its factorization.

344140545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3945.

The product of its (nonzero) digits is 19200, while the sum is 30.

The square root of 344140545 is about 18551.0254433549. The cubic root of 344140545 is about 700.7750225501.

Adding to 344140545 its reverse (545041443), we get a palindrome (889181988).

The spelling of 344140545 in words is "three hundred forty-four million, one hundred forty thousand, five hundred forty-five".