213132623 has 4 divisors (see below), whose sum is σ = 232508328. Its totient is φ = 193756920.

The previous prime is 213132589. The next prime is 213132631. The reversal of 213132623 is 326231312.

213132623 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 213132623 - 2¹⁰ = 213131599 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213132643) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9687836 + ... + 9687857.

It is an arithmetic number, because the mean of its divisors is an integer number (58127082).

Almost surely, 2^213132623 is an apocalyptic number.

213132623 is a deficient number, since it is larger than the sum of its proper divisors (19375705).

213132623 is a wasteful number, since it uses less digits than its factorization.

213132623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19375704.

The product of its digits is 1296, while the sum is 23.

The square root of 213132623 is about 14599.0624014010. The cubic root of 213132623 is about 597.3331856933. Note that the first 3 decimals are identical.

Adding to 213132623 its reverse (326231312), we get a palindrome (539363935).

The spelling of 213132623 in words is "two hundred thirteen million, one hundred thirty-two thousand, six hundred twenty-three".