102320215 has 16 divisors (see below), whose sum is σ = 131253696. Its totient is φ = 76384000.

The previous prime is 102320201. The next prime is 102320279. The reversal of 102320215 is 512023201.

It is not a de Polignac number, because 102320215 - 2²¹ = 100223063 is a prime.

It is a Duffinian number.

It is a congruent number.

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, 6136 + ... + 15565.

It is an arithmetic number, because the mean of its divisors is an integer number (8203356).

Almost surely, 2^102320215 is an apocalyptic number.

102320215 is a deficient number, since it is larger than the sum of its proper divisors (28933481).

102320215 is a wasteful number, since it uses less digits than its factorization.

102320215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21770.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 102320215 is about 10115.3455205445. The cubic root of 102320215 is about 467.7212998997.

Adding to 102320215 its reverse (512023201), we get a palindrome (614343416).

The spelling of 102320215 in words is "one hundred two million, three hundred twenty thousand, two hundred fifteen".