387216103 has 2 divisors, whose sum is σ = 387216104. Its totient is φ = 387216102.

The previous prime is 387216101. The next prime is 387216107. The reversal of 387216103 is 301612783.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 387216103 - 2¹ = 387216101 is a prime.

Together with 387216101, it forms a pair of twin primes.

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

It is equal to p_20690437 and since 387216103 and 20690437 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (387216101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 193608051 + 193608052.

It is an arithmetic number, because the mean of its divisors is an integer number (193608052).

Almost surely, 2^387216103 is an apocalyptic number.

387216103 is a deficient number, since it is larger than the sum of its proper divisors (1).

387216103 is an equidigital number, since it uses as much as digits as its factorization.

387216103 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 387216103 is about 19677.8073727740. The cubic root of 387216103 is about 728.8717813440.

Adding to 387216103 its reverse (301612783), we get a palindrome (688828886).

The spelling of 387216103 in words is "three hundred eighty-seven million, two hundred sixteen thousand, one hundred three".