209308402316 has 48 divisors (see below), whose sum is σ = 397614325920. Its totient is φ = 95833912320.

The previous prime is 209308402307. The next prime is 209308402343. The reversal of 209308402316 is 613204803902.

It is a self number, because there is not a number n which added to its sum of digits gives 209308402316.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9826670 + ... + 9847946.

It is an arithmetic number, because the mean of its divisors is an integer number (8283631790).

Almost surely, 2^209308402316 is an apocalyptic number.

209308402316 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

209308402316 is a deficient number, since it is larger than the sum of its proper divisors (188305923604).

209308402316 is a wasteful number, since it uses less digits than its factorization.

209308402316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22794 (or 22792 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 38.

The spelling of 209308402316 in words is "two hundred nine billion, three hundred eight million, four hundred two thousand, three hundred sixteen".