101685309 has 8 divisors (see below), whose sum is σ = 147905952. Its totient is φ = 61627440.

The previous prime is 101685307. The next prime is 101685317. The reversal of 101685309 is 903586101.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 101685309 - 2¹ = 101685307 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33), and also a Moran number because the ratio is a prime number: 3081373 = 101685309 / (1 + 0 + 1 + 6 + 8 + 5 + 3 + 0 + 9).

It is a self number, because there is not a number n which added to its sum of digits gives 101685309.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101685307) 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, 1540654 + ... + 1540719.

It is an arithmetic number, because the mean of its divisors is an integer number (18488244).

Almost surely, 2^101685309 is an apocalyptic number.

It is an amenable number.

101685309 is a deficient number, since it is larger than the sum of its proper divisors (46220643).

101685309 is a wasteful number, since it uses less digits than its factorization.

101685309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3081387.

The product of its (nonzero) digits is 6480, while the sum is 33.

The square root of 101685309 is about 10083.9133772559. The cubic root of 101685309 is about 466.7518746338.

The spelling of 101685309 in words is "one hundred one million, six hundred eighty-five thousand, three hundred nine".