344042513 has 4 divisors (see below), whose sum is σ = 344462388. Its totient is φ = 343622640.

The previous prime is 344042453. The next prime is 344042581. The reversal of 344042513 is 315240443.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 315240443 = 7 ⋅45034349.

It can be written as a sum of positive squares in 2 ways, for example, as 221652544 + 122389969 = 14888^2 + 11063^2 .

It is a cyclic number.

It is not a de Polignac number, because 344042513 - 2¹² = 344038417 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (344042113) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 208706 + ... + 210347.

It is an arithmetic number, because the mean of its divisors is an integer number (86115597).

Almost surely, 2^344042513 is an apocalyptic number.

It is an amenable number.

344042513 is a deficient number, since it is larger than the sum of its proper divisors (419875).

344042513 is an equidigital number, since it uses as much as digits as its factorization.

344042513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 419874.

The product of its (nonzero) digits is 5760, while the sum is 26.

The square root of 344042513 is about 18548.3830292562. The cubic root of 344042513 is about 700.7084752220.

Adding to 344042513 its reverse (315240443), we get a palindrome (659282956).

The spelling of 344042513 in words is "three hundred forty-four million, forty-two thousand, five hundred thirteen".