215255103403 has 8 divisors (see below), whose sum is σ = 222220532736. Its totient is φ = 208291031400.

The previous prime is 215255103361. The next prime is 215255103409. The reversal of 215255103403 is 304301552512.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-215255103403 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (215255103409) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12001 + ... + 656242.

It is an arithmetic number, because the mean of its divisors is an integer number (27777566592).

Almost surely, 2^215255103403 is an apocalyptic number.

215255103403 is a deficient number, since it is larger than the sum of its proper divisors (6965429333).

215255103403 is a wasteful number, since it uses less digits than its factorization.

215255103403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 678665.

The product of its (nonzero) digits is 18000, while the sum is 31.

Adding to 215255103403 its reverse (304301552512), we get a palindrome (519556655915).

The spelling of 215255103403 in words is "two hundred fifteen billion, two hundred fifty-five million, one hundred three thousand, four hundred three".