1312331122300 has 72 divisors (see below), whose sum is σ = 3109026009600. Its totient is φ = 476845675200.

The previous prime is 1312331122261. The next prime is 1312331122327. The reversal of 1312331122300 is 32211332131.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

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, 981301 + ... + 1894099.

It is an arithmetic number, because the mean of its divisors is an integer number (43180916800).

Almost surely, 2^{1312331122300} is an apocalyptic number.

1312331122300 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 1312331122300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1554513004800).

1312331122300 is an abundant number, since it is smaller than the sum of its proper divisors (1796694887300).

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

1312331122300 is a wasteful number, since it uses less digits than its factorization.

1312331122300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 914131 (or 914124 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 1312331122300 its reverse (32211332131), we get a palindrome (1344542454431).

The spelling of 1312331122300 in words is "one trillion, three hundred twelve billion, three hundred thirty-one million, one hundred twenty-two thousand, three hundred".