1323100 has 36 divisors (see below), whose sum is σ = 2921688. Its totient is φ = 520000.

The previous prime is 1323079. The next prime is 1323107. The reversal of 1323100 is 13231.

It is a super-2 number, since 2×1323100² = 3501187220000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1323107) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10035 + ... + 10165.

It is an arithmetic number, because the mean of its divisors is an integer number (81158).

2^1323100 is an apocalyptic number.

1323100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1323100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1460844).

1323100 is an abundant number, since it is smaller than the sum of its proper divisors (1598588).

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

1323100 is a wasteful number, since it uses less digits than its factorization.

1323100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246 (or 239 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 10.

The square root of 1323100 is about 1150.2608399837. The cubic root of 1323100 is about 109.7819371461.

Adding to 1323100 its reverse (13231), we get a palindrome (1336331).

Multiplying 1323100 by its reverse (13231), we get a square (17505936100 = 132310²).

1323100 divided by its reverse (13231) gives a square (100 = 10²).

The spelling of 1323100 in words is "one million, three hundred twenty-three thousand, one hundred".