213103423 has 12 divisors (see below), whose sum is σ = 232819920. Its totient is φ = 194952576.

The previous prime is 213103417. The next prime is 213103489. The reversal of 213103423 is 324301312.

It is not a de Polignac number, because 213103423 - 2²⁵ = 179548991 is a prime.

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 213103423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213103403) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13518 + ... + 24676.

It is an arithmetic number, because the mean of its divisors is an integer number (19401660).

Almost surely, 2^213103423 is an apocalyptic number.

213103423 is a deficient number, since it is larger than the sum of its proper divisors (19716497).

213103423 is a wasteful number, since it uses less digits than its factorization.

213103423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11298 (or 11285 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 213103423 is about 14598.0623029223. The cubic root of 213103423 is about 597.3059054559.

Adding to 213103423 its reverse (324301312), we get a palindrome (537404735).

The spelling of 213103423 in words is "two hundred thirteen million, one hundred three thousand, four hundred twenty-three".