215204130403 has 16 divisors (see below), whose sum is σ = 218496237696. Its totient is φ = 211937904640.

The previous prime is 215204130397. The next prime is 215204130473. The reversal of 215204130403 is 304031402512.

215204130403 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-215204130403 is a prime.

It is a super-2 number, since 2×215204130403² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (215204130473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 57218043 + ... + 57221803.

It is an arithmetic number, because the mean of its divisors is an integer number (13656014856).

Almost surely, 2^215204130403 is an apocalyptic number.

215204130403 is a deficient number, since it is larger than the sum of its proper divisors (3292107293).

215204130403 is a wasteful number, since it uses less digits than its factorization.

215204130403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6974.

The product of its (nonzero) digits is 2880, while the sum is 25.

Adding to 215204130403 its reverse (304031402512), we get a palindrome (519235532915).

The spelling of 215204130403 in words is "two hundred fifteen billion, two hundred four million, one hundred thirty thousand, four hundred three".