1312103203312 has 160 divisors (see below), whose sum is σ = 2856713587200. Its totient is φ = 578672640000.

The previous prime is 1312103203277. The next prime is 1312103203337. The reversal of 1312103203312 is 2133023012131.

It is a super-2 number, since 2×1312103203312² (a number of 25 digits) contains 22 as substring.

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 31 ways as a sum of consecutive naturals, for example, 1092508312 + ... + 1092509512.

It is an arithmetic number, because the mean of its divisors is an integer number (17854459920).

Almost surely, 2^{1312103203312} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1312103203312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1428356793600).

1312103203312 is an abundant number, since it is smaller than the sum of its proper divisors (1544610383888).

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

1312103203312 is a wasteful number, since it uses less digits than its factorization.

1312103203312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2103 (or 2097 counting only the distinct ones).

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

Adding to 1312103203312 its reverse (2133023012131), we get a palindrome (3445126215443).

The spelling of 1312103203312 in words is "one trillion, three hundred twelve billion, one hundred three million, two hundred three thousand, three hundred twelve".