1312043251300 has 72 divisors (see below), whose sum is σ = 2865276430016. Its totient is φ = 521474578560.

The previous prime is 1312043251291. The next prime is 1312043251339. The reversal of 1312043251300 is 31523402131.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 104264809 + ... + 104277391.

Almost surely, 2^{1312043251300} is an apocalyptic number.

1312043251300 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 1312043251300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1432638215008).

1312043251300 is an abundant number, since it is smaller than the sum of its proper divisors (1553233178716).

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

1312043251300 is a wasteful number, since it uses less digits than its factorization.

1312043251300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19157 (or 19150 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 25.

Adding to 1312043251300 its reverse (31523402131), we get a palindrome (1343566653431).

The spelling of 1312043251300 in words is "one trillion, three hundred twelve billion, forty-three million, two hundred fifty-one thousand, three hundred".