1320023001000 has 192 divisors, whose sum is σ = 4526916488640. Its totient is φ = 320005488000.

The previous prime is 1320023000971. The next prime is 1320023001001. The reversal of 1320023001000 is 1003200231.

It is a happy number.

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 (1320023001001) 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, 1455214 + ... + 2181213.

It is an arithmetic number, because the mean of its divisors is an integer number (23577690045).

Almost surely, 2^{1320023001000} is an apocalyptic number.

1320023001000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1320023001000 is an abundant number, since it is smaller than the sum of its proper divisors (3206893487640).

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

1320023001000 is a wasteful number, since it uses less digits than its factorization.

1320023001000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3636473 (or 3636448 counting only the distinct ones).

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

Adding to 1320023001000 its reverse (1003200231), we get a palindrome (1321026201231).

The spelling of 1320023001000 in words is "one trillion, three hundred twenty billion, twenty-three million, one thousand".