323143436 has 72 divisors (see below), whose sum is σ = 728082432. Its totient is φ = 124068000.

The previous prime is 323143423. The next prime is 323143441. The reversal of 323143436 is 634341323.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 323143399 and 323143408.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 152021 + ... + 154131.

It is an arithmetic number, because the mean of its divisors is an integer number (10112256).

Almost surely, 2^323143436 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 323143436, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (364041216).

323143436 is an abundant number, since it is smaller than the sum of its proper divisors (404938996).

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

323143436 is a wasteful number, since it uses less digits than its factorization.

323143436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2211 (or 2202 counting only the distinct ones).

The product of its digits is 15552, while the sum is 29.

The square root of 323143436 is about 17976.1908089562. The cubic root of 323143436 is about 686.2227514858. Note that the first 3 decimals are identical.

Adding to 323143436 its reverse (634341323), we get a palindrome (957484759).

The spelling of 323143436 in words is "three hundred twenty-three million, one hundred forty-three thousand, four hundred thirty-six".