344185613 has 2 divisors, whose sum is σ = 344185614. Its totient is φ = 344185612.

The previous prime is 344185609. The next prime is 344185637. The reversal of 344185613 is 316581443.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 200137609 + 144048004 = 14147^2 + 12002^2 .

It is an emirp because it is prime and its reverse (316581443) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 344185613 - 2² = 344185609 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (344185643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172092806 + 172092807.

It is an arithmetic number, because the mean of its divisors is an integer number (172092807).

Almost surely, 2^344185613 is an apocalyptic number.

It is an amenable number.

344185613 is a deficient number, since it is larger than the sum of its proper divisors (1).

344185613 is an equidigital number, since it uses as much as digits as its factorization.

344185613 is an evil number, because the sum of its binary digits is even.

The product of its digits is 34560, while the sum is 35.

The square root of 344185613 is about 18552.2401073294. The cubic root of 344185613 is about 700.8056119421.

The spelling of 344185613 in words is "three hundred forty-four million, one hundred eighty-five thousand, six hundred thirteen".