213232123 has 8 divisors (see below), whose sum is σ = 233062928. Its totient is φ = 193891104.

The previous prime is 213232067. The next prime is 213232127. The reversal of 213232123 is 321232312.

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

It is a cyclic number.

It is not a de Polignac number, because 213232123 - 2¹⁷ = 213101051 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 213232123.

It is not an unprimeable number, because it can be changed into a prime (213232127) 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, 121536 + ... + 123277.

It is an arithmetic number, because the mean of its divisors is an integer number (29132866).

Almost surely, 2^213232123 is an apocalyptic number.

213232123 is a deficient number, since it is larger than the sum of its proper divisors (19830805).

213232123 is a wasteful number, since it uses less digits than its factorization.

213232123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244893.

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

The square root of 213232123 is about 14602.4697568596. The cubic root of 213232123 is about 597.4261253296.

Adding to 213232123 its reverse (321232312), we get a palindrome (534464435).

The spelling of 213232123 in words is "two hundred thirteen million, two hundred thirty-two thousand, one hundred twenty-three".