1312143443020 has 24 divisors (see below), whose sum is σ = 2755524111984. Its totient is φ = 524853018816.

The previous prime is 1312143443003. The next prime is 1312143443033. The reversal of 1312143443020 is 203443412131.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1312143443020.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3411307 + ... + 3776413.

It is an arithmetic number, because the mean of its divisors is an integer number (114813504666).

Almost surely, 2^{1312143443020} is an apocalyptic number.

1312143443020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1312143443020 is an abundant number, since it is smaller than the sum of its proper divisors (1443380668964).

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

1312143443020 is a wasteful number, since it uses less digits than its factorization.

1312143443020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 544809 (or 544807 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 28.

Adding to 1312143443020 its reverse (203443412131), we get a palindrome (1515586855151).

The spelling of 1312143443020 in words is "one trillion, three hundred twelve billion, one hundred forty-three million, four hundred forty-three thousand, twenty".