209130344 has 16 divisors (see below), whose sum is σ = 392388900. Its totient is φ = 104493312.

The previous prime is 209130263. The next prime is 209130347. The reversal of 209130344 is 443031902.

209130344 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 195720100 + 13410244 = 13990^2 + 3662^2 .

It is not an unprimeable number, because it can be changed into a prime (209130347) 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, 4592 + ... + 20960.

Almost surely, 2^209130344 is an apocalyptic number.

It is an amenable number.

209130344 is a deficient number, since it is larger than the sum of its proper divisors (183258556).

209130344 is a wasteful number, since it uses less digits than its factorization.

209130344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17972 (or 17968 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 209130344 is about 14461.3396336577. The cubic root of 209130344 is about 593.5705572758.

The spelling of 209130344 in words is "two hundred nine million, one hundred thirty thousand, three hundred forty-four".