209315120 has 40 divisors (see below), whose sum is σ = 556181664. Its totient is φ = 71764992.

The previous prime is 209315089. The next prime is 209315123. The reversal of 209315120 is 21513902.

209315120 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×209315120² = 87625638921228800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (209315123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 186329 + ... + 187448.

Almost surely, 2^209315120 is an apocalyptic number.

209315120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

209315120 is an abundant number, since it is smaller than the sum of its proper divisors (346866544).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

209315120 is a wasteful number, since it uses less digits than its factorization.

209315120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 373797 (or 373791 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 23.

The square root of 209315120 is about 14467.7268428734. The cubic root of 209315120 is about 593.7453211820.

The spelling of 209315120 in words is "two hundred nine million, three hundred fifteen thousand, one hundred twenty".