1231452200 has 96 divisors (see below), whose sum is σ = 3259344960. Its totient is φ = 428313600.

The previous prime is 1231452199. The next prime is 1231452203. The reversal of 1231452200 is 22541321.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (1231452203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 38432 + ... + 62768.

It is an arithmetic number, because the mean of its divisors is an integer number (33951510).

Almost surely, 2^1231452200 is an apocalyptic number.

1231452200 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 1231452200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1629672480).

1231452200 is an abundant number, since it is smaller than the sum of its proper divisors (2027892760).

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

1231452200 is a wasteful number, since it uses less digits than its factorization.

1231452200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24387 (or 24378 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 1231452200 is about 35092.0532314654. The cubic root of 1231452200 is about 1071.8627697097.

Adding to 1231452200 its reverse (22541321), we get a palindrome (1253993521).

The spelling of 1231452200 in words is "one billion, two hundred thirty-one million, four hundred fifty-two thousand, two hundred".