101800315 has 4 divisors (see below), whose sum is σ = 122160384. Its totient is φ = 81440248.

The previous prime is 101800313. The next prime is 101800319. The reversal of 101800315 is 513008101.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 101800315 - 2¹ = 101800313 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 101800292 and 101800301.

It is not an unprimeable number, because it can be changed into a prime (101800313) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10180027 + ... + 10180036.

It is an arithmetic number, because the mean of its divisors is an integer number (30540096).

Almost surely, 2^101800315 is an apocalyptic number.

101800315 is a deficient number, since it is larger than the sum of its proper divisors (20360069).

101800315 is an equidigital number, since it uses as much as digits as its factorization.

101800315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20360068.

The product of its (nonzero) digits is 120, while the sum is 19.

The square root of 101800315 is about 10089.6142146268. The cubic root of 101800315 is about 466.9277736641.

Adding to 101800315 its reverse (513008101), we get a palindrome (614808416).

The spelling of 101800315 in words is "one hundred one million, eight hundred thousand, three hundred fifteen".