213123324 has 24 divisors (see below), whose sum is σ = 498895488. Its totient is φ = 70811440.

The previous prime is 213123319. The next prime is 213123331. The reversal of 213123324 is 423321312.

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 213123324.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24822 + ... + 32285.

It is an arithmetic number, because the mean of its divisors is an integer number (20787312).

Almost surely, 2^213123324 is an apocalyptic number.

It is an amenable number.

213123324 is an abundant number, since it is smaller than the sum of its proper divisors (285772164).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

213123324 is a wasteful number, since it uses less digits than its factorization.

213123324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57425 (or 57423 counting only the distinct ones).

The product of its digits is 864, while the sum is 21.

The square root of 213123324 is about 14598.7439185705. The cubic root of 213123324 is about 597.3244983292.

Adding to 213123324 its reverse (423321312), we get a palindrome (636444636).

The spelling of 213123324 in words is "two hundred thirteen million, one hundred twenty-three thousand, three hundred twenty-four".