1023312000 has 128 divisors (see below), whose sum is σ = 3392438400. Its totient is φ = 272870400.

The previous prime is 1023311999. The next prime is 1023312007. The reversal of 1023312000 is 2133201.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (12).

It is not an unprimeable number, because it can be changed into a prime (1023312007) 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 15 ways as a sum of consecutive naturals, for example, 37341 + ... + 58659.

It is an arithmetic number, because the mean of its divisors is an integer number (26503425).

Almost surely, 2^1023312000 is an apocalyptic number.

1023312000 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 1023312000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1696219200).

1023312000 is an abundant number, since it is smaller than the sum of its proper divisors (2369126400).

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

1023312000 is an equidigital number, since it uses as much as digits as its factorization.

1023312000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21351 (or 21329 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 1023312000 is about 31989.2481937291. The cubic root of 1023312000 is about 1007.7110534868.

Adding to 1023312000 its reverse (2133201), we get a palindrome (1025445201).

The spelling of 1023312000 in words is "one billion, twenty-three million, three hundred twelve thousand".