1312301331220 has 48 divisors (see below), whose sum is σ = 3008218502016. Its totient is φ = 476905968000.

The previous prime is 1312301331203. The next prime is 1312301331241. The reversal of 1312301331220 is 221331032131.

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

It is a junction number, because it is equal to n+sod(n) for n = 1312301331191 and 1312301331200.

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, 1483296 + ... + 2196535.

It is an arithmetic number, because the mean of its divisors is an integer number (62671218792).

Almost surely, 2^{1312301331220} is an apocalyptic number.

1312301331220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1312301331220 is an abundant number, since it is smaller than the sum of its proper divisors (1695917170796).

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

1312301331220 is a wasteful number, since it uses less digits than its factorization.

1312301331220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3681472 (or 3681470 counting only the distinct ones).

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

Adding to 1312301331220 its reverse (221331032131), we get a palindrome (1533632363351).

The spelling of 1312301331220 in words is "one trillion, three hundred twelve billion, three hundred one million, three hundred thirty-one thousand, two hundred twenty".