1312345443320 has 32 divisors (see below), whose sum is σ = 2993226257520. Its totient is φ = 517747242240.

The previous prime is 1312345443319. The next prime is 1312345443337. The reversal of 1312345443320 is 233445432131.

It is a congruent number.

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, 224713766 + ... + 224719605.

Almost surely, 2^{1312345443320} is an apocalyptic number.

1312345443320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1312345443320 is an abundant number, since it is smaller than the sum of its proper divisors (1680880814200).

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

1312345443320 is a wasteful number, since it uses less digits than its factorization.

1312345443320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 449433455 (or 449433451 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 35.

The spelling of 1312345443320 in words is "one trillion, three hundred twelve billion, three hundred forty-five million, four hundred forty-three thousand, three hundred twenty".