103215199 has 2 divisors, whose sum is σ = 103215200. Its totient is φ = 103215198.

The previous prime is 103215197. The next prime is 103215209. The reversal of 103215199 is 991512301.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 103215199 - 2¹ = 103215197 is a prime.

Together with 103215197, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 103215199.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (103215197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51607599 + 51607600.

It is an arithmetic number, because the mean of its divisors is an integer number (51607600).

Almost surely, 2^103215199 is an apocalyptic number.

103215199 is a deficient number, since it is larger than the sum of its proper divisors (1).

103215199 is an equidigital number, since it uses as much as digits as its factorization.

103215199 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2430, while the sum is 31.

The square root of 103215199 is about 10159.4881268694. The cubic root of 103215199 is about 469.0810458183.

The spelling of 103215199 in words is "one hundred three million, two hundred fifteen thousand, one hundred ninety-nine".