209131036120 has 32 divisors (see below), whose sum is σ = 470558840400. Its totient is φ = 83649923968.

The previous prime is 209131036069. The next prime is 209131036123. The reversal of 209131036120 is 21630131902.

209131036120 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (209131036123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1908171 + ... + 2014789.

Almost surely, 2^209131036120 is an apocalyptic number.

209131036120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

209131036120 is an abundant number, since it is smaller than the sum of its proper divisors (261427804280).

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

209131036120 is a wasteful number, since it uses less digits than its factorization.

209131036120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155667 (or 155663 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 28.

The spelling of 209131036120 in words is "two hundred nine billion, one hundred thirty-one million, thirty-six thousand, one hundred twenty".