1321312200344 has 16 divisors (see below), whose sum is σ = 2511398190120. Its totient is φ = 651606016320.

The previous prime is 1321312200319. The next prime is 1321312200349. The reversal of 1321312200344 is 4430022131231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1321312200349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1131259862 + ... + 1131261029.

Almost surely, 2^{1321312200344} is an apocalyptic number.

It is an amenable number.

1321312200344 is a deficient number, since it is larger than the sum of its proper divisors (1190085989776).

1321312200344 is a wasteful number, since it uses less digits than its factorization.

1321312200344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2262520970 (or 2262520966 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 26.

Adding to 1321312200344 its reverse (4430022131231), we get a palindrome (5751334331575).

The spelling of 1321312200344 in words is "one trillion, three hundred twenty-one billion, three hundred twelve million, two hundred thousand, three hundred forty-four".