103210385 has 8 divisors (see below), whose sum is σ = 125079336. Its totient is φ = 81750400.

The previous prime is 103210319. The next prime is 103210399. The reversal of 103210385 is 583012301.

It can be written as a sum of positive squares in 4 ways, for example, as 17073424 + 86136961 = 4132^2 + 9281^2 .

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

It is not a de Polignac number, because 103210385 - 2¹² = 103206289 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 103210385.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 101684 + ... + 102693.

It is an arithmetic number, because the mean of its divisors is an integer number (15634917).

Almost surely, 2^103210385 is an apocalyptic number.

It is an amenable number.

103210385 is a deficient number, since it is larger than the sum of its proper divisors (21868951).

103210385 is a wasteful number, since it uses less digits than its factorization.

103210385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204483.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 103210385 is about 10159.2512027216. The cubic root of 103210385 is about 469.0737529929.

Adding to 103210385 its reverse (583012301), we get a palindrome (686222686).

The spelling of 103210385 in words is "one hundred three million, two hundred ten thousand, three hundred eighty-five".