215204103 has 12 divisors (see below), whose sum is σ = 314056288. Its totient is φ = 141989760.

The previous prime is 215204069. The next prime is 215204107. The reversal of 215204103 is 301402512.

It is a de Polignac number, because none of the positive numbers 2^k-215204103 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215204107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 122383 + ... + 124128.

Almost surely, 2^215204103 is an apocalyptic number.

215204103 is a deficient number, since it is larger than the sum of its proper divisors (98852185).

215204103 is a wasteful number, since it uses less digits than its factorization.

215204103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 246614 (or 246611 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 215204103 is about 14669.8365021564. The cubic root of 215204103 is about 599.2621513375.

Adding to 215204103 its reverse (301402512), we get a palindrome (516606615).

The spelling of 215204103 in words is "two hundred fifteen million, two hundred four thousand, one hundred three".