1312002013200 has 240 divisors, whose sum is σ = 4267859059776. Its totient is φ = 344455372800.

The previous prime is 1312002013183. The next prime is 1312002013207. The reversal of 1312002013200 is 23102002131.

It is a tau number, because it is divible by the number of its divisors (240).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 1312002013200.

It is not an unprimeable number, because it can be changed into a prime (1312002013207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 202685164 + ... + 202691636.

Almost surely, 2^{1312002013200} is an apocalyptic number.

1312002013200 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 1312002013200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2133929529888).

1312002013200 is an abundant number, since it is smaller than the sum of its proper divisors (2955857046576).

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

1312002013200 is a wasteful number, since it uses less digits than its factorization.

1312002013200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9082 (or 9071 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 1312002013200 its reverse (23102002131), we get a palindrome (1335104015331).

The spelling of 1312002013200 in words is "one trillion, three hundred twelve billion, two million, thirteen thousand, two hundred".