1312103313020 has 48 divisors (see below), whose sum is σ = 2775549218400. Its totient is φ = 521007452160.

The previous prime is 1312103312981. The next prime is 1312103313043. The reversal of 1312103313020 is 203133012131.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 1312103312983 and 1312103313001.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31918880 + ... + 31959960.

It is an arithmetic number, because the mean of its divisors is an integer number (57823942050).

Almost surely, 2^{1312103313020} is an apocalyptic number.

1312103313020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1312103313020 is an abundant number, since it is smaller than the sum of its proper divisors (1463445905380).

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

1312103313020 is a wasteful number, since it uses less digits than its factorization.

1312103313020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52718 (or 52716 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 1312103313020 its reverse (203133012131), we get a palindrome (1515236325151).

The spelling of 1312103313020 in words is "one trillion, three hundred twelve billion, one hundred three million, three hundred thirteen thousand, twenty".