213103123203 has 16 divisors (see below), whose sum is σ = 288899215616. Its totient is φ = 139689563040.

The previous prime is 213103123201. The next prime is 213103123223. The reversal of 213103123203 is 302321301312.

It is not a de Polignac number, because 213103123203 - 2¹ = 213103123201 is a prime.

It is a super-2 number, since 2×213103123203² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 213103123203.

It is not an unprimeable number, because it can be changed into a prime (213103123201) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 305226 + ... + 720672.

It is an arithmetic number, because the mean of its divisors is an integer number (18056200976).

Almost surely, 2^213103123203 is an apocalyptic number.

213103123203 is a deficient number, since it is larger than the sum of its proper divisors (75796092413).

213103123203 is a wasteful number, since it uses less digits than its factorization.

213103123203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 418314.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 213103123203 its reverse (302321301312), we get a palindrome (515424424515).

The spelling of 213103123203 in words is "two hundred thirteen billion, one hundred three million, one hundred twenty-three thousand, two hundred three".