213123336 has 32 divisors (see below), whose sum is σ = 555975360. Its totient is φ = 67952192.

The previous prime is 213123331. The next prime is 213123401. The reversal of 213123336 is 633321312.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24).

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

It is not an unprimeable number, because it can be changed into a prime (213123331) 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, 192495 + ... + 193598.

It is an arithmetic number, because the mean of its divisors is an integer number (17374230).

Almost surely, 2^213123336 is an apocalyptic number.

It is an amenable number.

213123336 is an abundant number, since it is smaller than the sum of its proper divisors (342852024).

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

213123336 is a wasteful number, since it uses less digits than its factorization.

213123336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 386125 (or 386121 counting only the distinct ones).

The product of its digits is 1944, while the sum is 24.

The square root of 213123336 is about 14598.7443295648. The cubic root of 213123336 is about 597.3245095401.

Adding to 213123336 its reverse (633321312), we get a palindrome (846444648).

The spelling of 213123336 in words is "two hundred thirteen million, one hundred twenty-three thousand, three hundred thirty-six".