1323733356 has 144 divisors (see below), whose sum is σ = 3990325248. Its totient is φ = 365299200.

The previous prime is 1323733351. The next prime is 1323733399. The reversal of 1323733356 is 6533373231.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 1323733356.

It is not an unprimeable number, because it can be changed into a prime (1323733351) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 205521 + ... + 211863.

It is an arithmetic number, because the mean of its divisors is an integer number (27710592).

Almost surely, 2^1323733356 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 1323733356, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1995162624).

1323733356 is an abundant number, since it is smaller than the sum of its proper divisors (2666591892).

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

1323733356 is a wasteful number, since it uses less digits than its factorization.

1323733356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6412 (or 6407 counting only the distinct ones).

The product of its digits is 102060, while the sum is 36.

The square root of 1323733356 is about 36383.1465928938. The cubic root of 1323733356 is about 1097.9945155847.

The spelling of 1323733356 in words is "one billion, three hundred twenty-three million, seven hundred thirty-three thousand, three hundred fifty-six".